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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ -->
<title>src/Control/Lens/At.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE GADTs #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LANGUAGE Rank2Types #-}</span>
<a name="line-4"></a><span class='hs-comment'>{-# LANGUAGE TypeFamilies #-}</span>
<a name="line-5"></a><span class='hs-comment'>{-# LANGUAGE FlexibleContexts #-}</span>
<a name="line-6"></a><span class='hs-comment'>{-# LANGUAGE DefaultSignatures #-}</span>
<a name="line-7"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances #-}</span>
<a name="line-8"></a><span class='hs-comment'>{-# LANGUAGE ScopedTypeVariables #-}</span>
<a name="line-9"></a><span class='hs-comment'>{-# LANGUAGE MultiParamTypeClasses #-}</span>
<a name="line-10"></a><span class='hs-comment'>{-# LANGUAGE UndecidableInstances #-}</span>
<a name="line-11"></a><span class='hs-comment'>{-# LANGUAGE TypeOperators #-}</span>
<a name="line-12"></a>
<a name="line-13"></a><span class='hs-cpp'>#ifdef TRUSTWORTHY</span>
<a name="line-14"></a><span class='hs-comment'>{-# LANGUAGE Trustworthy #-}</span>
<a name="line-15"></a><span class='hs-cpp'>#endif</span>
<a name="line-16"></a>
<a name="line-17"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ &gt;= 711</span>
<a name="line-18"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-redundant-constraints #-}</span>
<a name="line-19"></a><span class='hs-cpp'>#endif</span>
<a name="line-20"></a>
<a name="line-21"></a><span class='hs-cpp'>#ifndef MIN_VERSION_base</span>
<a name="line-22"></a><span class='hs-cpp'>#define MIN_VERSION_base(x,y,z) 1</span>
<a name="line-23"></a><span class='hs-cpp'>#endif</span>
<a name="line-24"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-25"></a><span class='hs-comment'>-- |</span>
<a name="line-26"></a><span class='hs-comment'>-- Module      :  Control.Lens.At</span>
<a name="line-27"></a><span class='hs-comment'>-- Copyright   :  (C) 2012-15 Edward Kmett</span>
<a name="line-28"></a><span class='hs-comment'>-- License     :  BSD-style (see the file LICENSE)</span>
<a name="line-29"></a><span class='hs-comment'>-- Maintainer  :  Edward Kmett &lt;ekmett@gmail.com&gt;</span>
<a name="line-30"></a><span class='hs-comment'>-- Stability   :  experimental</span>
<a name="line-31"></a><span class='hs-comment'>-- Portability :  non-portable</span>
<a name="line-32"></a><span class='hs-comment'>--</span>
<a name="line-33"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-34"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-varop'>.</span><span class='hs-conid'>At</span>
<a name="line-35"></a>  <span class='hs-layout'>(</span>
<a name="line-36"></a>  <span class='hs-comment'>-- * At</span>
<a name="line-37"></a>    <span class='hs-conid'>At</span><span class='hs-layout'>(</span><span class='hs-varid'>at</span><span class='hs-layout'>)</span>
<a name="line-38"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>sans</span>
<a name="line-39"></a>    <span class='hs-layout'>,</span> <span class='hs-varid'>iat</span>
<a name="line-40"></a>  <span class='hs-comment'>-- * Ixed</span>
<a name="line-41"></a>  <span class='hs-layout'>,</span> <span class='hs-conid'>Index</span>
<a name="line-42"></a>  <span class='hs-layout'>,</span> <span class='hs-conid'>IxValue</span>
<a name="line-43"></a>  <span class='hs-layout'>,</span> <span class='hs-conid'>Ixed</span><span class='hs-layout'>(</span><span class='hs-varid'>ix</span><span class='hs-layout'>)</span>
<a name="line-44"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>ixAt</span>
<a name="line-45"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>iix</span>
<a name="line-46"></a>  <span class='hs-comment'>-- * Contains</span>
<a name="line-47"></a>  <span class='hs-layout'>,</span> <span class='hs-conid'>Contains</span><span class='hs-layout'>(</span><span class='hs-varid'>contains</span><span class='hs-layout'>)</span>
<a name="line-48"></a>  <span class='hs-layout'>,</span> <span class='hs-varid'>icontains</span>
<a name="line-49"></a>  <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-50"></a>
<a name="line-51"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-varop'>.</span><span class='hs-conid'>Each</span>
<a name="line-52"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversal</span>
<a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-54"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-varop'>.</span><span class='hs-conid'>Setter</span>
<a name="line-55"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span><span class='hs-varop'>.</span><span class='hs-conid'>Indexed</span>
<a name="line-56"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>IArray</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Array</span>
<a name="line-57"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>Unboxed</span>
<a name="line-58"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>StrictB</span>
<a name="line-59"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>LazyB</span>
<a name="line-60"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Complex</span>
<a name="line-61"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Hashable</span>
<a name="line-62"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>HashMap</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>HashMap</span>
<a name="line-63"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>HashSet</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>HashSet</span>
<a name="line-64"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Int</span>
<a name="line-65"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>IntMap</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>IntMap</span>
<a name="line-66"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>IntSet</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>IntSet</span>
<a name="line-67"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span><span class='hs-varop'>.</span><span class='hs-conid'>NonEmpty</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>NonEmpty</span>
<a name="line-68"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Map</span>
<a name="line-69"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Set</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Set</span>
<a name="line-70"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequence</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Seq</span>
<a name="line-71"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>StrictT</span>
<a name="line-72"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>LazyT</span>
<a name="line-73"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Tree</span>
<a name="line-74"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Vector</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>indexed</span><span class='hs-layout'>)</span>
<a name="line-75"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Primitive</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Prim</span>
<a name="line-76"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Storable</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Storable</span>
<a name="line-77"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Unboxed</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Unboxed</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>indexed</span><span class='hs-layout'>)</span>
<a name="line-78"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span>
<a name="line-79"></a>
<a name="line-80"></a><span class='hs-cpp'>#if !MIN_VERSION_base(4,8,0)</span>
<a name="line-81"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span>
<a name="line-82"></a><span class='hs-cpp'>#endif</span>
<a name="line-83"></a>
<a name="line-84"></a><span class='hs-keyword'>type</span> <span class='hs-varid'>family</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>*</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>*</span>
<a name="line-85"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>e</span>
<a name="line-86"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-conid'>IntSet</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-87"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Set</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-88"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashSet</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-89"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-90"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-91"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-92"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-93"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-94"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-95"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-96"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-layout'>,</span><span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-97"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-layout'>,</span><span class='hs-varid'>f</span><span class='hs-layout'>,</span><span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-98"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-layout'>,</span><span class='hs-varid'>f</span><span class='hs-layout'>,</span><span class='hs-varid'>g</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-99"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-layout'>,</span><span class='hs-varid'>f</span><span class='hs-layout'>,</span><span class='hs-varid'>g</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>,</span><span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-100"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>IntMap</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-101"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>k</span>
<a name="line-102"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashMap</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>k</span>
<a name="line-103"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span>
<a name="line-104"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>UArray</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>i</span>
<a name="line-105"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-106"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-107"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-108"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Unboxed</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-109"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Complex</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-110"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Identity</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>()</span>
<a name="line-111"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>()</span>
<a name="line-112"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Int</span><span class='hs-keyglyph'>]</span>
<a name="line-113"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-114"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int64</span>
<a name="line-115"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int</span>
<a name="line-116"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>Index</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Int64</span>
<a name="line-117"></a>
<a name="line-118"></a><span class='hs-comment'>-- $setup</span>
<a name="line-119"></a><span class='hs-comment'>-- &gt;&gt;&gt; :set -XNoOverloadedStrings</span>
<a name="line-120"></a><span class='hs-comment'>-- &gt;&gt;&gt; import Control.Lens</span>
<a name="line-121"></a><span class='hs-comment'>-- &gt;&gt;&gt; import Debug.SimpleReflect.Expr</span>
<a name="line-122"></a><span class='hs-comment'>-- &gt;&gt;&gt; import Debug.SimpleReflect.Vars as Vars hiding (f,g)</span>
<a name="line-123"></a><span class='hs-comment'>-- &gt;&gt;&gt; let f  :: Expr -&gt; Expr; f = Debug.SimpleReflect.Vars.f</span>
<a name="line-124"></a><span class='hs-comment'>-- &gt;&gt;&gt; let g  :: Expr -&gt; Expr; g = Debug.SimpleReflect.Vars.g</span>
<a name="line-125"></a><span class='hs-comment'>-- &gt;&gt;&gt; let f' :: Int -&gt; Expr -&gt; Expr; f' = Debug.SimpleReflect.Vars.f'</span>
<a name="line-126"></a><span class='hs-comment'>-- &gt;&gt;&gt; let h  :: Int -&gt; Expr; h = Debug.SimpleReflect.Vars.h</span>
<a name="line-127"></a>
<a name="line-128"></a><a name="Index"></a><span class='hs-comment'>-- |</span>
<a name="line-129"></a><a name="Index"></a><span class='hs-comment'>-- This class provides a simple 'Lens' that lets you view (and modify)</span>
<a name="line-130"></a><a name="Index"></a><span class='hs-comment'>-- information about whether or not a container contains a given 'Index'.</span>
<a name="line-131"></a><a name="Index"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Contains</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>where</span>
<a name="line-132"></a>  <span class='hs-comment'>-- |</span>
<a name="line-133"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; IntSet.fromList [1,2,3,4] ^. contains 3</span>
<a name="line-134"></a>  <span class='hs-comment'>-- True</span>
<a name="line-135"></a>  <span class='hs-comment'>--</span>
<a name="line-136"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; IntSet.fromList [1,2,3,4] ^. contains 5</span>
<a name="line-137"></a>  <span class='hs-comment'>-- False</span>
<a name="line-138"></a>  <span class='hs-comment'>--</span>
<a name="line-139"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; IntSet.fromList [1,2,3,4] &amp; contains 3 .~ False</span>
<a name="line-140"></a>  <span class='hs-comment'>-- fromList [1,2,4]</span>
<a name="line-141"></a>  <span class='hs-varid'>contains</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Lens'</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Bool</span>
<a name="line-142"></a>
<a name="line-143"></a><a name="icontains"></a><span class='hs-comment'>-- | An indexed version of 'contains'.</span>
<a name="line-144"></a><span class='hs-comment'>--</span>
<a name="line-145"></a><span class='hs-comment'>-- &gt;&gt;&gt; IntSet.fromList [1,2,3,4] ^@. icontains 3</span>
<a name="line-146"></a><span class='hs-comment'>-- (3,True)</span>
<a name="line-147"></a><span class='hs-comment'>--</span>
<a name="line-148"></a><span class='hs-comment'>-- &gt;&gt;&gt; IntSet.fromList [1,2,3,4] ^@. icontains 5</span>
<a name="line-149"></a><span class='hs-comment'>-- (5,False)</span>
<a name="line-150"></a><span class='hs-comment'>--</span>
<a name="line-151"></a><span class='hs-comment'>-- &gt;&gt;&gt; IntSet.fromList [1,2,3,4] &amp; icontains 3 %@~ \i x -&gt; if odd i then not x else x</span>
<a name="line-152"></a><span class='hs-comment'>-- fromList [1,2,4]</span>
<a name="line-153"></a><span class='hs-comment'>--</span>
<a name="line-154"></a><span class='hs-comment'>-- &gt;&gt;&gt; IntSet.fromList [1,2,3,4] &amp; icontains 3 %@~ \i x -&gt; if even i then not x else x</span>
<a name="line-155"></a><span class='hs-comment'>-- fromList [1,2,3,4]</span>
<a name="line-156"></a><span class='hs-definition'>icontains</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Contains</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IndexedLens'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Index</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Bool</span>
<a name="line-157"></a><span class='hs-definition'>icontains</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>contains</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-varid'>indexed</span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-158"></a><span class='hs-comment'>{-# INLINE icontains #-}</span>
<a name="line-159"></a>
<a name="line-160"></a><a name="instance%20Contains%20IntSet"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Contains</span> <span class='hs-conid'>IntSet</span> <span class='hs-keyword'>where</span>
<a name="line-161"></a>  <span class='hs-varid'>contains</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-162"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span>
<a name="line-163"></a>  <span class='hs-comment'>{-# INLINE contains #-}</span>
<a name="line-164"></a>
<a name="line-165"></a><a name="instance%20Contains%20(Set%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Contains</span> <span class='hs-layout'>(</span><span class='hs-conid'>Set</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-166"></a>  <span class='hs-varid'>contains</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-167"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span>
<a name="line-168"></a>  <span class='hs-comment'>{-# INLINE contains #-}</span>
<a name="line-169"></a>
<a name="line-170"></a><a name="instance%20Contains%20(HashSet%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Hashable</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Contains</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashSet</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-171"></a>  <span class='hs-varid'>contains</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span>
<a name="line-172"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>s</span>
<a name="line-173"></a>  <span class='hs-comment'>{-# INLINE contains #-}</span>
<a name="line-174"></a>
<a name="line-175"></a><span class='hs-comment'>-- | This provides a common notion of a value at an index that is shared by both 'Ixed' and 'At'.</span>
<a name="line-176"></a><span class='hs-keyword'>type</span> <span class='hs-varid'>family</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>m</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>*</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-varop'>*</span>
<a name="line-177"></a>
<a name="line-178"></a><a name="Index"></a><span class='hs-comment'>-- | This simple 'Traversal' lets you 'traverse' the value at a given</span>
<a name="line-179"></a><a name="Index"></a><span class='hs-comment'>-- key in a 'Map' or element at an ordinal position in a list or 'Seq'.</span>
<a name="line-180"></a><a name="Index"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Ixed</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>where</span>
<a name="line-181"></a>  <span class='hs-comment'>-- | This simple 'Traversal' lets you 'traverse' the value at a given</span>
<a name="line-182"></a>  <span class='hs-comment'>-- key in a 'Map' or element at an ordinal position in a list or 'Seq'.</span>
<a name="line-183"></a>  <span class='hs-comment'>--</span>
<a name="line-184"></a>  <span class='hs-comment'>-- /NB:/ Setting the value of this 'Traversal' will only set the value in</span>
<a name="line-185"></a>  <span class='hs-comment'>-- 'at' if it is already present.</span>
<a name="line-186"></a>  <span class='hs-comment'>--</span>
<a name="line-187"></a>  <span class='hs-comment'>-- If you want to be able to insert /missing/ values, you want 'at'.</span>
<a name="line-188"></a>  <span class='hs-comment'>--</span>
<a name="line-189"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; Seq.fromList [a,b,c,d] &amp; ix 2 %~ f</span>
<a name="line-190"></a>  <span class='hs-comment'>-- fromList [a,b,f c,d]</span>
<a name="line-191"></a>  <span class='hs-comment'>--</span>
<a name="line-192"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; Seq.fromList [a,b,c,d] &amp; ix 2 .~ e</span>
<a name="line-193"></a>  <span class='hs-comment'>-- fromList [a,b,e,d]</span>
<a name="line-194"></a>  <span class='hs-comment'>--</span>
<a name="line-195"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; Seq.fromList [a,b,c,d] ^? ix 2</span>
<a name="line-196"></a>  <span class='hs-comment'>-- Just c</span>
<a name="line-197"></a>  <span class='hs-comment'>--</span>
<a name="line-198"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; Seq.fromList [] ^? ix 2</span>
<a name="line-199"></a>  <span class='hs-comment'>-- Nothing</span>
<a name="line-200"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Traversal'</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>IxValue</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-201"></a><span class='hs-cpp'>#ifdef DEFAULT_SIGNATURES</span>
<a name="line-202"></a>  <span class='hs-keyword'>default</span> <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Applicative</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span> <span class='hs-conid'>At</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>LensLike'</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>IxValue</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-203"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ixAt</span>
<a name="line-204"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-205"></a><span class='hs-cpp'>#endif</span>
<a name="line-206"></a>
<a name="line-207"></a><a name="iix"></a><span class='hs-comment'>-- | An indexed version of 'ix'.</span>
<a name="line-208"></a><span class='hs-comment'>--</span>
<a name="line-209"></a><span class='hs-comment'>-- &gt;&gt;&gt; Seq.fromList [a,b,c,d] &amp; iix 2 %@~ f'</span>
<a name="line-210"></a><span class='hs-comment'>-- fromList [a,b,f' 2 c,d]</span>
<a name="line-211"></a><span class='hs-comment'>--</span>
<a name="line-212"></a><span class='hs-comment'>-- &gt;&gt;&gt; Seq.fromList [a,b,c,d] &amp; iix 2 .@~ h</span>
<a name="line-213"></a><span class='hs-comment'>-- fromList [a,b,h 2,d]</span>
<a name="line-214"></a><span class='hs-comment'>--</span>
<a name="line-215"></a><span class='hs-comment'>-- &gt;&gt;&gt; Seq.fromList [a,b,c,d] ^@? iix 2</span>
<a name="line-216"></a><span class='hs-comment'>-- Just (2,c)</span>
<a name="line-217"></a><span class='hs-comment'>--</span>
<a name="line-218"></a><span class='hs-comment'>-- &gt;&gt;&gt; Seq.fromList [] ^@? iix 2</span>
<a name="line-219"></a><span class='hs-comment'>-- Nothing</span>
<a name="line-220"></a><span class='hs-definition'>iix</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ixed</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IndexedTraversal'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Index</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>IxValue</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-221"></a><span class='hs-definition'>iix</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-varid'>indexed</span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-222"></a><span class='hs-comment'>{-# INLINE iix #-}</span>
<a name="line-223"></a>
<a name="line-224"></a><a name="ixAt"></a><span class='hs-comment'>-- | A definition of 'ix' for types with an 'At' instance. This is the default</span>
<a name="line-225"></a><span class='hs-comment'>-- if you don't specify a definition for 'ix'.</span>
<a name="line-226"></a><span class='hs-definition'>ixAt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>At</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Traversal'</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>IxValue</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-227"></a><span class='hs-definition'>ixAt</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>at</span> <span class='hs-varid'>i</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span>
<a name="line-228"></a><span class='hs-comment'>{-# INLINE ixAt #-}</span>
<a name="line-229"></a>
<a name="line-230"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-231"></a><a name="instance%20Ixed%20(e%20-%3e%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-232"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>e</span> <span class='hs-varid'>p</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-varid'>e'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>e</span> <span class='hs-varop'>==</span> <span class='hs-varid'>e'</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>f</span> <span class='hs-varid'>e'</span>
<a name="line-233"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-234"></a>
<a name="line-235"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-236"></a><a name="instance%20Ixed%20(Maybe%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-237"></a>  <span class='hs-varid'>ix</span> <span class='hs-conid'>()</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-238"></a>  <span class='hs-varid'>ix</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>Nothing</span>  <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-conid'>Nothing</span>
<a name="line-239"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-240"></a>
<a name="line-241"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-242"></a><a name="instance%20Ixed%20%5ba%5d"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>where</span>
<a name="line-243"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>xs0</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>k</span> <span class='hs-varop'>&lt;</span> <span class='hs-num'>0</span>     <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>xs0</span>
<a name="line-244"></a>             <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-varid'>xs0</span> <span class='hs-varid'>k</span> <span class='hs-keyword'>where</span>
<a name="line-245"></a>    <span class='hs-varid'>go</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-conid'>[]</span>
<a name="line-246"></a>    <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-layout'>(</span><span class='hs-conop'>:</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-247"></a>    <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>go</span> <span class='hs-keyword'>as</span> <span class='hs-varop'>$!</span> <span class='hs-varid'>i</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-248"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-249"></a>
<a name="line-250"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-251"></a><a name="instance%20Ixed%20(NonEmpty%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>NonEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-252"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>xs0</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>k</span> <span class='hs-varop'>&lt;</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>xs0</span>
<a name="line-253"></a>             <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-varid'>xs0</span> <span class='hs-varid'>k</span> <span class='hs-keyword'>where</span>
<a name="line-254"></a>    <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:|</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-layout'>(</span><span class='hs-conop'>:|</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-255"></a>    <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:|</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:|</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>ix</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-comment'>-</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>f</span> <span class='hs-keyword'>as</span>
<a name="line-256"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-257"></a>
<a name="line-258"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Identity</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-259"></a><a name="instance%20Ixed%20(Identity%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Identity</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-260"></a>  <span class='hs-varid'>ix</span> <span class='hs-conid'>()</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Identity</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Identity</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-261"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-262"></a>
<a name="line-263"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-264"></a><a name="instance%20Ixed%20(Tree%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-265"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>xs0</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>go</span> <span class='hs-varid'>xs0</span> <span class='hs-keyword'>where</span>
<a name="line-266"></a>    <span class='hs-varid'>go</span> <span class='hs-conid'>[]</span> <span class='hs-layout'>(</span><span class='hs-conid'>Node</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Node</span> <span class='hs-varid'>a'</span> <span class='hs-keyword'>as</span>
<a name="line-267"></a>    <span class='hs-varid'>go</span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-conop'>:</span><span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-varid'>t</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Node</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-268"></a>      <span class='hs-keyglyph'>|</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&lt;</span> <span class='hs-num'>0</span>     <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>t</span>
<a name="line-269"></a>      <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Node</span> <span class='hs-varid'>a</span> <span class='hs-varop'>&lt;$&gt;</span> <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-varid'>go</span> <span class='hs-varid'>is</span><span class='hs-layout'>)</span> <span class='hs-keyword'>as</span>
<a name="line-270"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-271"></a>
<a name="line-272"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-273"></a><a name="instance%20Ixed%20(Seq%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-274"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span>
<a name="line-275"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-num'>0</span> <span class='hs-varop'>&lt;=</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&lt;</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>index</span> <span class='hs-varid'>m</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>update</span> <span class='hs-varid'>i</span> <span class='hs-varid'>a</span> <span class='hs-varid'>m</span>
<a name="line-276"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>                  <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>m</span>
<a name="line-277"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-278"></a>
<a name="line-279"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>IntMap</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-280"></a><a name="instance%20Ixed%20(IntMap%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>IntMap</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-281"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>IntMap</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>of</span>
<a name="line-282"></a>     <span class='hs-conid'>Just</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>v</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>v'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IntMap</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>v'</span> <span class='hs-varid'>m</span>
<a name="line-283"></a>     <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>m</span>
<a name="line-284"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-285"></a>
<a name="line-286"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-287"></a><a name="instance%20Ixed%20(Map%20k%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-288"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>of</span>
<a name="line-289"></a>     <span class='hs-conid'>Just</span> <span class='hs-varid'>v</span>  <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>v</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>v'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>v'</span> <span class='hs-varid'>m</span>
<a name="line-290"></a>     <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>m</span>
<a name="line-291"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-292"></a>
<a name="line-293"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashMap</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-294"></a><a name="instance%20Ixed%20(HashMap%20k%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>k</span><span class='hs-layout'>,</span> <span class='hs-conid'>Hashable</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashMap</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-295"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>HashMap</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>of</span>
<a name="line-296"></a>     <span class='hs-conid'>Just</span> <span class='hs-varid'>v</span>  <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>v</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>v'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>HashMap</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>v'</span> <span class='hs-varid'>m</span>
<a name="line-297"></a>     <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>m</span>
<a name="line-298"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-299"></a>
<a name="line-300"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Set</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>()</span>
<a name="line-301"></a><a name="instance%20Ixed%20(Set%20k)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Set</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-302"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-303"></a>     <span class='hs-keyword'>then</span> <span class='hs-varid'>f</span> <span class='hs-conid'>()</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-conid'>()</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-304"></a>     <span class='hs-keyword'>else</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>m</span>
<a name="line-305"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-306"></a>
<a name="line-307"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-conid'>IntSet</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>()</span>
<a name="line-308"></a><a name="instance%20Ixed%20IntSet"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-conid'>IntSet</span> <span class='hs-keyword'>where</span>
<a name="line-309"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-310"></a>     <span class='hs-keyword'>then</span> <span class='hs-varid'>f</span> <span class='hs-conid'>()</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-conid'>()</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-311"></a>     <span class='hs-keyword'>else</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>m</span>
<a name="line-312"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-313"></a>
<a name="line-314"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashSet</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>()</span>
<a name="line-315"></a><a name="instance%20Ixed%20(HashSet%20k)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>k</span><span class='hs-layout'>,</span> <span class='hs-conid'>Hashable</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashSet</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-316"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-317"></a>     <span class='hs-keyword'>then</span> <span class='hs-varid'>f</span> <span class='hs-conid'>()</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-conid'>()</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-318"></a>     <span class='hs-keyword'>else</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>m</span>
<a name="line-319"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-320"></a>
<a name="line-321"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>e</span>
<a name="line-322"></a><a name="instance%20Ixed%20(Array.Array%20i%20e)"></a><span class='hs-comment'>-- |</span>
<a name="line-323"></a><a name="instance%20Ixed%20(Array.Array%20i%20e)"></a><span class='hs-comment'>-- @</span>
<a name="line-324"></a><a name="instance%20Ixed%20(Array.Array%20i%20e)"></a><span class='hs-comment'>-- arr '!' i ≡ arr 'Control.Lens.Getter.^.' 'ix' i</span>
<a name="line-325"></a><a name="instance%20Ixed%20(Array.Array%20i%20e)"></a><span class='hs-comment'>-- arr '//' [(i,e)] ≡ 'ix' i 'Control.Lens.Setter..~' e '$' arr</span>
<a name="line-326"></a><a name="instance%20Ixed%20(Array.Array%20i%20e)"></a><span class='hs-comment'>-- @</span>
<a name="line-327"></a><a name="instance%20Ixed%20(Array.Array%20i%20e)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ix</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Array</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-328"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-varid'>arr</span>
<a name="line-329"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>inRange</span> <span class='hs-layout'>(</span><span class='hs-varid'>bounds</span> <span class='hs-varid'>arr</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span> <span class='hs-conid'>Array</span><span class='hs-varop'>.!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>arr</span> <span class='hs-conid'>Array</span><span class='hs-varop'>.//</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-330"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>              <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>arr</span>
<a name="line-331"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-332"></a>
<a name="line-333"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>UArray</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>e</span>
<a name="line-334"></a><a name="instance%20Ixed%20(UArray%20i%20e)"></a><span class='hs-comment'>-- |</span>
<a name="line-335"></a><a name="instance%20Ixed%20(UArray%20i%20e)"></a><span class='hs-comment'>-- @</span>
<a name="line-336"></a><a name="instance%20Ixed%20(UArray%20i%20e)"></a><span class='hs-comment'>-- arr '!' i ≡ arr 'Control.Lens.Getter.^.' 'ix' i</span>
<a name="line-337"></a><a name="instance%20Ixed%20(UArray%20i%20e)"></a><span class='hs-comment'>-- arr '//' [(i,e)] ≡ 'ix' i 'Control.Lens.Setter..~' e '$' arr</span>
<a name="line-338"></a><a name="instance%20Ixed%20(UArray%20i%20e)"></a><span class='hs-comment'>-- @</span>
<a name="line-339"></a><a name="instance%20Ixed%20(UArray%20i%20e)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>IArray</span> <span class='hs-conid'>UArray</span> <span class='hs-varid'>e</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ix</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>UArray</span> <span class='hs-varid'>i</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-340"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-varid'>arr</span>
<a name="line-341"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>inRange</span> <span class='hs-layout'>(</span><span class='hs-varid'>bounds</span> <span class='hs-varid'>arr</span><span class='hs-layout'>)</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>arr</span> <span class='hs-conid'>Array</span><span class='hs-varop'>.!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>e</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>arr</span> <span class='hs-conid'>Array</span><span class='hs-varop'>.//</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span><span class='hs-varid'>e</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-342"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>              <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>arr</span>
<a name="line-343"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-344"></a>
<a name="line-345"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-346"></a><a name="instance%20Ixed%20(Vector.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-347"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-varid'>v</span>
<a name="line-348"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-num'>0</span> <span class='hs-varop'>&lt;=</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&lt;</span> <span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>v</span> <span class='hs-conid'>Vector</span><span class='hs-varop'>.!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>v</span> <span class='hs-conid'>Vector</span><span class='hs-varop'>.//</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-349"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>                     <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>v</span>
<a name="line-350"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-351"></a>
<a name="line-352"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-353"></a><a name="instance%20Ixed%20(Prim.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Prim</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-354"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-varid'>v</span>
<a name="line-355"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-num'>0</span> <span class='hs-varop'>&lt;=</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&lt;</span> <span class='hs-conid'>Prim</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>v</span> <span class='hs-conid'>Prim</span><span class='hs-varop'>.!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>v</span> <span class='hs-conid'>Prim</span><span class='hs-varop'>.//</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-356"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>                   <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>v</span>
<a name="line-357"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-358"></a>
<a name="line-359"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-360"></a><a name="instance%20Ixed%20(Storable.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-361"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-varid'>v</span>
<a name="line-362"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-num'>0</span> <span class='hs-varop'>&lt;=</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&lt;</span> <span class='hs-conid'>Storable</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>v</span> <span class='hs-conid'>Storable</span><span class='hs-varop'>.!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>v</span> <span class='hs-conid'>Storable</span><span class='hs-varop'>.//</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-363"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>                       <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>v</span>
<a name="line-364"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-365"></a>
<a name="line-366"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-conid'>Unboxed</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-367"></a><a name="instance%20Ixed%20(Unboxed.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Unbox</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-conid'>Unboxed</span><span class='hs-varop'>.</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-368"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-varid'>v</span>
<a name="line-369"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-num'>0</span> <span class='hs-varop'>&lt;=</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>i</span> <span class='hs-varop'>&lt;</span> <span class='hs-conid'>Unboxed</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>v</span> <span class='hs-conid'>Unboxed</span><span class='hs-varop'>.!</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>v</span> <span class='hs-conid'>Unboxed</span><span class='hs-varop'>.//</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-370"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span>                      <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>v</span>
<a name="line-371"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-372"></a>
<a name="line-373"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Char</span>
<a name="line-374"></a><a name="instance%20Ixed%20StrictT.Text"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>where</span>
<a name="line-375"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>e</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-varid'>splitAt</span> <span class='hs-varid'>e</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-376"></a>     <span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-varid'>mr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-varid'>mr</span> <span class='hs-keyword'>of</span>
<a name="line-377"></a>       <span class='hs-conid'>Nothing</span>      <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>s</span>
<a name="line-378"></a>       <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-varid'>d</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs</span><span class='hs-keyglyph'>]</span>
<a name="line-379"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-380"></a>
<a name="line-381"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Char</span>
<a name="line-382"></a><a name="instance%20Ixed%20LazyT.Text"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>where</span>
<a name="line-383"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>e</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-varid'>splitAt</span> <span class='hs-varid'>e</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-384"></a>     <span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-varid'>mr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-varid'>mr</span> <span class='hs-keyword'>of</span>
<a name="line-385"></a>       <span class='hs-conid'>Nothing</span>      <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>s</span>
<a name="line-386"></a>       <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-varid'>append</span> <span class='hs-varid'>l</span> <span class='hs-layout'>(</span><span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-varid'>cons</span> <span class='hs-varid'>d</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-387"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-388"></a>
<a name="line-389"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word8</span>
<a name="line-390"></a><a name="instance%20Ixed%20StrictB.ByteString"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>where</span>
<a name="line-391"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>e</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-varid'>splitAt</span> <span class='hs-varid'>e</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-392"></a>     <span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-varid'>mr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-varid'>mr</span> <span class='hs-keyword'>of</span>
<a name="line-393"></a>       <span class='hs-conid'>Nothing</span>      <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>s</span>
<a name="line-394"></a>       <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-varid'>d</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs</span><span class='hs-keyglyph'>]</span>
<a name="line-395"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-396"></a>
<a name="line-397"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Word8</span>
<a name="line-398"></a><a name="instance%20Ixed%20LazyB.ByteString"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ixed</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>where</span>
<a name="line-399"></a>  <span class='hs-comment'>-- TODO: we could be lazier, returning each chunk as it is passed</span>
<a name="line-400"></a>  <span class='hs-varid'>ix</span> <span class='hs-varid'>e</span> <span class='hs-varid'>f</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-varid'>splitAt</span> <span class='hs-varid'>e</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-401"></a>     <span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-layout'>,</span> <span class='hs-varid'>mr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-varid'>uncons</span> <span class='hs-varid'>mr</span> <span class='hs-keyword'>of</span>
<a name="line-402"></a>       <span class='hs-conid'>Nothing</span>      <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>pure</span> <span class='hs-varid'>s</span>
<a name="line-403"></a>       <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>f</span> <span class='hs-varid'>c</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-varid'>append</span> <span class='hs-varid'>l</span> <span class='hs-layout'>(</span><span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-varid'>cons</span> <span class='hs-varid'>d</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-404"></a>  <span class='hs-comment'>{-# INLINE ix #-}</span>
<a name="line-405"></a>
<a name="line-406"></a>
<a name="line-407"></a>
<a name="line-408"></a><a name="At"></a><span class='hs-comment'>-- | 'At' provides a 'Lens' that can be used to read,</span>
<a name="line-409"></a><a name="At"></a><span class='hs-comment'>-- write or delete the value associated with a key in a 'Map'-like</span>
<a name="line-410"></a><a name="At"></a><span class='hs-comment'>-- container on an ad hoc basis.</span>
<a name="line-411"></a><a name="At"></a><span class='hs-comment'>--</span>
<a name="line-412"></a><a name="At"></a><span class='hs-comment'>-- An instance of 'At' should satisfy:</span>
<a name="line-413"></a><a name="At"></a><span class='hs-comment'>--</span>
<a name="line-414"></a><a name="At"></a><span class='hs-comment'>-- @</span>
<a name="line-415"></a><a name="At"></a><span class='hs-comment'>-- 'ix' k ≡ 'at' k '.' 'traverse'</span>
<a name="line-416"></a><a name="At"></a><span class='hs-comment'>-- @</span>
<a name="line-417"></a><a name="At"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>Ixed</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>At</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>where</span>
<a name="line-418"></a>  <span class='hs-comment'>-- |</span>
<a name="line-419"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; Map.fromList [(1,"world")] ^.at 1</span>
<a name="line-420"></a>  <span class='hs-comment'>-- Just "world"</span>
<a name="line-421"></a>  <span class='hs-comment'>--</span>
<a name="line-422"></a>  <span class='hs-comment'>-- &gt;&gt;&gt; at 1 ?~ "hello" $ Map.empty</span>
<a name="line-423"></a>  <span class='hs-comment'>-- fromList [(1,"hello")]</span>
<a name="line-424"></a>  <span class='hs-comment'>--</span>
<a name="line-425"></a>  <span class='hs-comment'>-- /Note:/ 'Map'-like containers form a reasonable instance, but not 'Array'-like ones, where</span>
<a name="line-426"></a>  <span class='hs-comment'>-- you cannot satisfy the 'Lens' laws.</span>
<a name="line-427"></a>  <span class='hs-varid'>at</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Lens'</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>IxValue</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-428"></a>
<a name="line-429"></a><a name="sans"></a><span class='hs-comment'>-- | Delete the value associated with a key in a 'Map'-like container</span>
<a name="line-430"></a><span class='hs-comment'>--</span>
<a name="line-431"></a><span class='hs-comment'>-- @</span>
<a name="line-432"></a><span class='hs-comment'>-- 'sans' k = 'at' k .~ Nothing</span>
<a name="line-433"></a><span class='hs-comment'>-- @</span>
<a name="line-434"></a><span class='hs-definition'>sans</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>At</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>m</span>
<a name="line-435"></a><span class='hs-definition'>sans</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-varop'>&amp;</span> <span class='hs-varid'>at</span> <span class='hs-varid'>k</span> <span class='hs-varop'>.~</span> <span class='hs-conid'>Nothing</span>
<a name="line-436"></a><span class='hs-comment'>{-# INLINE sans #-}</span>
<a name="line-437"></a>
<a name="line-438"></a><a name="iat"></a><span class='hs-comment'>-- | An indexed version of 'at'.</span>
<a name="line-439"></a><span class='hs-comment'>--</span>
<a name="line-440"></a><span class='hs-comment'>-- &gt;&gt;&gt; Map.fromList [(1,"world")] ^@. iat 1</span>
<a name="line-441"></a><span class='hs-comment'>-- (1,Just "world")</span>
<a name="line-442"></a><span class='hs-comment'>--</span>
<a name="line-443"></a><span class='hs-comment'>-- &gt;&gt;&gt; iat 1 %@~ (\i x -&gt; if odd i then Just "hello" else Nothing) $ Map.empty</span>
<a name="line-444"></a><span class='hs-comment'>-- fromList [(1,"hello")]</span>
<a name="line-445"></a><span class='hs-comment'>--</span>
<a name="line-446"></a><span class='hs-comment'>-- &gt;&gt;&gt; iat 2 %@~ (\i x -&gt; if odd i then Just "hello" else Nothing) $ Map.empty</span>
<a name="line-447"></a><span class='hs-comment'>-- fromList []</span>
<a name="line-448"></a><span class='hs-comment'>--</span>
<a name="line-449"></a><span class='hs-definition'>iat</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>At</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Index</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IndexedLens'</span> <span class='hs-layout'>(</span><span class='hs-conid'>Index</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>IxValue</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-450"></a><span class='hs-definition'>iat</span> <span class='hs-varid'>i</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>at</span> <span class='hs-varid'>i</span> <span class='hs-layout'>(</span><span class='hs-varid'>indexed</span> <span class='hs-varid'>f</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-451"></a><span class='hs-comment'>{-# INLINE iat #-}</span>
<a name="line-452"></a>
<a name="line-453"></a><a name="instance%20At%20(Maybe%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>At</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-454"></a>  <span class='hs-varid'>at</span> <span class='hs-conid'>()</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span>
<a name="line-455"></a>  <span class='hs-comment'>{-# INLINE at #-}</span>
<a name="line-456"></a>
<a name="line-457"></a><a name="instance%20At%20(IntMap%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>At</span> <span class='hs-layout'>(</span><span class='hs-conid'>IntMap</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-458"></a>  <span class='hs-varid'>at</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>mv</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>r</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-459"></a>    <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-layout'>(</span><span class='hs-conid'>IntMap</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>mv</span>
<a name="line-460"></a>    <span class='hs-conid'>Just</span> <span class='hs-varid'>v'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IntMap</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>v'</span> <span class='hs-varid'>m</span>
<a name="line-461"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>mv</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IntMap</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-462"></a>  <span class='hs-comment'>{-# INLINE at #-}</span>
<a name="line-463"></a>
<a name="line-464"></a><a name="instance%20At%20(Map%20k%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>At</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-465"></a>  <span class='hs-varid'>at</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>mv</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>r</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-466"></a>    <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-layout'>(</span><span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>mv</span>
<a name="line-467"></a>    <span class='hs-conid'>Just</span> <span class='hs-varid'>v'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>v'</span> <span class='hs-varid'>m</span>
<a name="line-468"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>mv</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-469"></a>  <span class='hs-comment'>{-# INLINE at #-}</span>
<a name="line-470"></a>
<a name="line-471"></a><a name="instance%20At%20(HashMap%20k%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>k</span><span class='hs-layout'>,</span> <span class='hs-conid'>Hashable</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>At</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashMap</span> <span class='hs-varid'>k</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-472"></a>  <span class='hs-varid'>at</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>mv</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>r</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-473"></a>    <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashMap</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>mv</span>
<a name="line-474"></a>    <span class='hs-conid'>Just</span> <span class='hs-varid'>v'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>HashMap</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>v'</span> <span class='hs-varid'>m</span>
<a name="line-475"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>mv</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>HashMap</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-476"></a>  <span class='hs-comment'>{-# INLINE at #-}</span>
<a name="line-477"></a>
<a name="line-478"></a><a name="instance%20At%20IntSet"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>At</span> <span class='hs-conid'>IntSet</span> <span class='hs-keyword'>where</span>
<a name="line-479"></a>  <span class='hs-varid'>at</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>mv</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>r</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-480"></a>    <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-layout'>(</span><span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>mv</span>
<a name="line-481"></a>    <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-482"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>mv</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>Nothing</span>
<a name="line-483"></a>  <span class='hs-comment'>{-# INLINE at #-}</span>
<a name="line-484"></a>
<a name="line-485"></a><a name="instance%20At%20(Set%20k)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>k</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>At</span> <span class='hs-layout'>(</span><span class='hs-conid'>Set</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-486"></a>  <span class='hs-varid'>at</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>mv</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>r</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-487"></a>    <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-layout'>(</span><span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>mv</span>
<a name="line-488"></a>    <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-489"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>mv</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>Nothing</span>
<a name="line-490"></a>  <span class='hs-comment'>{-# INLINE at #-}</span>
<a name="line-491"></a>
<a name="line-492"></a><a name="instance%20At%20(HashSet%20k)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>k</span><span class='hs-layout'>,</span> <span class='hs-conid'>Hashable</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>At</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashSet</span> <span class='hs-varid'>k</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-493"></a>  <span class='hs-varid'>at</span> <span class='hs-varid'>k</span> <span class='hs-varid'>f</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>mv</span> <span class='hs-varop'>&lt;&amp;&gt;</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>r</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>r</span> <span class='hs-keyword'>of</span>
<a name="line-494"></a>    <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-layout'>(</span><span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>mv</span>
<a name="line-495"></a>    <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>insert</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span>
<a name="line-496"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>mv</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-varid'>k</span> <span class='hs-varid'>m</span> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>else</span> <span class='hs-conid'>Nothing</span>
<a name="line-497"></a>  <span class='hs-comment'>{-# INLINE at #-}</span>
<a name="line-498"></a>
<a name="line-499"></a>
<a name="line-500"></a><span class='hs-comment'>-- | @'ix' :: 'Int' -&gt; 'Traversal'' (a,a) a@</span>
<a name="line-501"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-502"></a><a name="instance%20Ixed%20(a,a2)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-503"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elementOf</span> <span class='hs-varid'>each</span>
<a name="line-504"></a>
<a name="line-505"></a><span class='hs-comment'>-- | @'ix' :: 'Int' -&gt; 'Traversal'' (a,a,a) a@</span>
<a name="line-506"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-507"></a><a name="instance%20Ixed%20(a,a2,a3)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a3</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-508"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elementOf</span> <span class='hs-varid'>each</span>
<a name="line-509"></a>
<a name="line-510"></a><span class='hs-comment'>-- | @'ix' :: 'Int' -&gt; 'Traversal'' (a,a,a,a) a@</span>
<a name="line-511"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-512"></a><a name="instance%20Ixed%20(a,a2,a3,a4)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-513"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elementOf</span> <span class='hs-varid'>each</span>
<a name="line-514"></a>
<a name="line-515"></a><span class='hs-comment'>-- | @'ix' :: 'Int' -&gt; 'Traversal'' (a,a,a,a,a) a@</span>
<a name="line-516"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-517"></a><a name="instance%20Ixed%20(a,a2,a3,a4,a5)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a5</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-518"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elementOf</span> <span class='hs-varid'>each</span>
<a name="line-519"></a>
<a name="line-520"></a><span class='hs-comment'>-- | @'ix' :: 'Int' -&gt; 'Traversal'' (a,a,a,a,a,a) a@</span>
<a name="line-521"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span><span class='hs-varid'>a6</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-522"></a><a name="instance%20Ixed%20(a,a2,a3,a4,a5,a6)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a6</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span><span class='hs-varid'>a6</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-523"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elementOf</span> <span class='hs-varid'>each</span>
<a name="line-524"></a>
<a name="line-525"></a><span class='hs-comment'>-- | @'ix' :: 'Int' -&gt; 'Traversal'' (a,a,a,a,a,a,a) a@</span>
<a name="line-526"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span><span class='hs-varid'>a7</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-527"></a><a name="instance%20Ixed%20(a,a2,a3,a4,a5,a6,a7)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a7</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span><span class='hs-varid'>a7</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-528"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elementOf</span> <span class='hs-varid'>each</span>
<a name="line-529"></a>
<a name="line-530"></a><span class='hs-comment'>-- | @'ix' :: 'Int' -&gt; 'Traversal'' (a,a,a,a,a,a,a,a) a@</span>
<a name="line-531"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span><span class='hs-varid'>a7</span><span class='hs-layout'>,</span><span class='hs-varid'>a8</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-532"></a><a name="instance%20Ixed%20(a,a2,a3,a4,a5,a6,a7,a8)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a7</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a8</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span><span class='hs-varid'>a7</span><span class='hs-layout'>,</span><span class='hs-varid'>a8</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-533"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elementOf</span> <span class='hs-varid'>each</span>
<a name="line-534"></a>
<a name="line-535"></a><span class='hs-comment'>-- | @'ix' :: 'Int' -&gt; 'Traversal'' (a,a,a,a,a,a,a,a,a) a@</span>
<a name="line-536"></a><span class='hs-keyword'>type</span> <span class='hs-keyword'>instance</span> <span class='hs-conid'>IxValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span><span class='hs-varid'>a7</span><span class='hs-layout'>,</span><span class='hs-varid'>a8</span><span class='hs-layout'>,</span><span class='hs-varid'>a9</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span>
<a name="line-537"></a><a name="instance%20Ixed%20(a,a2,a3,a4,a5,a6,a7,a8,a9)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a7</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a8</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>~</span><span class='hs-varid'>a9</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Ixed</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>a2</span><span class='hs-layout'>,</span><span class='hs-varid'>a3</span><span class='hs-layout'>,</span><span class='hs-varid'>a4</span><span class='hs-layout'>,</span><span class='hs-varid'>a5</span><span class='hs-layout'>,</span><span class='hs-varid'>a6</span><span class='hs-layout'>,</span><span class='hs-varid'>a7</span><span class='hs-layout'>,</span><span class='hs-varid'>a8</span><span class='hs-layout'>,</span><span class='hs-varid'>a9</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-538"></a>  <span class='hs-varid'>ix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>elementOf</span> <span class='hs-varid'>each</span>
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