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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE MagicHash #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LANGUAGE DefaultSignatures #-}</span>
<a name="line-4"></a>
<a name="line-5"></a><span class='hs-cpp'>#ifdef TRUSTWORTHY</span>
<a name="line-6"></a><span class='hs-comment'>{-# LANGUAGE Trustworthy #-}</span>
<a name="line-7"></a><span class='hs-cpp'>#endif</span>
<a name="line-8"></a>
<a name="line-9"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 710</span>
<a name="line-10"></a><span class='hs-comment'>{-# LANGUAGE PatternSynonyms #-}</span>
<a name="line-11"></a><span class='hs-comment'>{-# LANGUAGE ViewPatterns #-}</span>
<a name="line-12"></a><span class='hs-cpp'>#endif</span>
<a name="line-13"></a>
<a name="line-14"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-15"></a><span class='hs-comment'>-- |</span>
<a name="line-16"></a><span class='hs-comment'>-- Module : Control.Lens.Empty</span>
<a name="line-17"></a><span class='hs-comment'>-- Copyright : (C) 2012-15 Edward Kmett</span>
<a name="line-18"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span>
<a name="line-19"></a><span class='hs-comment'>-- Maintainer : Edward Kmett <ekmett@gmail.com></span>
<a name="line-20"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-21"></a><span class='hs-comment'>-- Portability : non-portable</span>
<a name="line-22"></a><span class='hs-comment'>--</span>
<a name="line-23"></a><span class='hs-comment'>-------------------------------------------------------------------------------</span>
<a name="line-24"></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'>Empty</span>
<a name="line-25"></a> <span class='hs-layout'>(</span>
<a name="line-26"></a> <span class='hs-conid'>AsEmpty</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-27"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 710</span>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>pattern</span> <span class='hs-conid'>Empty</span>
<a name="line-29"></a><span class='hs-cpp'>#endif</span>
<a name="line-30"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-31"></a>
<a name="line-32"></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'>Iso</span>
<a name="line-33"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 710</span>
<a name="line-34"></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'>Fold</span>
<a name="line-35"></a><span class='hs-cpp'>#endif</span>
<a name="line-36"></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'>Prism</span>
<a name="line-37"></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'>Review</span>
<a name="line-38"></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-39"></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-40"></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-41"></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-42"></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-43"></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-44"></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-45"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
<a name="line-46"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Profunctor</span><span class='hs-varop'>.</span><span class='hs-conid'>Unsafe</span>
<a name="line-48"></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-49"></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-50"></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-51"></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-52"></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>
<a name="line-53"></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>
<a name="line-54"></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-55"></a>
<a name="line-56"></a><span class='hs-cpp'>#if !defined(mingw32_HOST_OS) && !defined(ghcjs_HOST_OS)</span>
<a name="line-57"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Event</span>
<a name="line-58"></a><span class='hs-cpp'>#endif</span>
<a name="line-59"></a>
<a name="line-60"></a><a name="Prism'"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-61"></a> <span class='hs-comment'>-- |</span>
<a name="line-62"></a> <span class='hs-comment'>--</span>
<a name="line-63"></a> <span class='hs-comment'>-- >>> isn't _Empty [1,2,3]</span>
<a name="line-64"></a> <span class='hs-comment'>-- True</span>
<a name="line-65"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Prism'</span> <span class='hs-varid'>a</span> <span class='hs-conid'>()</span>
<a name="line-66"></a><span class='hs-cpp'>#ifndef HLINT</span>
<a name="line-67"></a> <span class='hs-keyword'>default</span> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monoid</span> <span class='hs-varid'>a</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-keyglyph'>=></span> <span class='hs-conid'>Prism'</span> <span class='hs-varid'>a</span> <span class='hs-conid'>()</span>
<a name="line-68"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>only</span> <span class='hs-varid'>mempty</span>
<a name="line-69"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-70"></a><span class='hs-cpp'>#endif</span>
<a name="line-71"></a>
<a name="line-72"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ >= 710</span>
<a name="line-73"></a><a name="pattern"></a><span class='hs-definition'>pattern</span> <span class='hs-conid'>Empty</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-varid'>has</span> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-74"></a> <span class='hs-conid'>Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>review</span> <span class='hs-sel'>_Empty</span> <span class='hs-conid'>()</span>
<a name="line-75"></a><span class='hs-cpp'>#endif</span>
<a name="line-76"></a>
<a name="line-77"></a><a name="instance%20AsEmpty%20Ordering"></a><span class='hs-comment'>{- Default Monoid instances -}</span>
<a name="line-78"></a><a name="instance%20AsEmpty%20Ordering"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-conid'>Ordering</span>
<a name="line-79"></a><a name="instance%20AsEmpty%20()"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-conid'>()</span>
<a name="line-80"></a><a name="instance%20AsEmpty%20Any"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-conid'>Any</span>
<a name="line-81"></a><a name="instance%20AsEmpty%20All"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-conid'>All</span>
<a name="line-82"></a><span class='hs-cpp'>#if !defined(mingw32_HOST_OS) && !defined(ghcjs_HOST_OS)</span>
<a name="line-83"></a><a name="instance%20AsEmpty%20Event"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-conid'>Event</span>
<a name="line-84"></a><span class='hs-cpp'>#endif</span>
<a name="line-85"></a><a name="instance%20AsEmpty%20(Product%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'>Num</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>AsEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>Product</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-86"></a><a name="instance%20AsEmpty%20(Sum%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'>Num</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>AsEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>Sum</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-87"></a>
<a name="line-88"></a><a name="instance%20AsEmpty%20(Maybe%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-89"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_Nothing</span>
<a name="line-90"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-91"></a>
<a name="line-92"></a><a name="instance%20AsEmpty%20(Last%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>Last</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-93"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-layout'>(</span><span class='hs-conid'>Last</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>isNothing</span> <span class='hs-varop'>.#</span> <span class='hs-varid'>getLast</span><span class='hs-layout'>)</span>
<a name="line-94"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="instance%20AsEmpty%20(First%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>First</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-97"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-layout'>(</span><span class='hs-conid'>First</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>isNothing</span> <span class='hs-varop'>.#</span> <span class='hs-varid'>getFirst</span><span class='hs-layout'>)</span>
<a name="line-98"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-99"></a>
<a name="line-100"></a><a name="instance%20AsEmpty%20(Dual%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>AsEmpty</span> <span class='hs-layout'>(</span><span class='hs-conid'>Dual</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-101"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iso</span> <span class='hs-varid'>getDual</span> <span class='hs-conid'>Dual</span> <span class='hs-varop'>.</span> <span class='hs-sel'>_Empty</span>
<a name="line-102"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="instance%20AsEmpty%20(a,b)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>AsEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>AsEmpty</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-keyword'>where</span>
<a name="line-105"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prism'</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-sel'>_Empty</span> <span class='hs-cpp'>#</span> <span class='hs-conid'>()</span><span class='hs-layout'>,</span> <span class='hs-sel'>_Empty</span> <span class='hs-cpp'>#</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span><span class='hs-varid'>s'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_Empty</span> <span class='hs-conid'>Left</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-106"></a> <span class='hs-conid'>Left</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_Empty</span> <span class='hs-conid'>Left</span> <span class='hs-varid'>s'</span> <span class='hs-keyword'>of</span>
<a name="line-107"></a> <span class='hs-conid'>Left</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span>
<a name="line-108"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-109"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-110"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-111"></a>
<a name="line-112"></a><a name="instance%20AsEmpty%20(a,b,c)"></a><span class='hs-keyword'>instance</span> <span class='hs-layout'>(</span><span class='hs-conid'>AsEmpty</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>AsEmpty</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-keyword'>where</span>
<a name="line-113"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prism'</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-sel'>_Empty</span> <span class='hs-cpp'>#</span> <span class='hs-conid'>()</span><span class='hs-layout'>,</span> <span class='hs-sel'>_Empty</span> <span class='hs-cpp'>#</span> <span class='hs-conid'>()</span><span class='hs-layout'>,</span> <span class='hs-sel'>_Empty</span> <span class='hs-cpp'>#</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span><span class='hs-varid'>s'</span><span class='hs-layout'>,</span><span class='hs-varid'>s''</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_Empty</span> <span class='hs-conid'>Left</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-114"></a> <span class='hs-conid'>Left</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_Empty</span> <span class='hs-conid'>Left</span> <span class='hs-varid'>s'</span> <span class='hs-keyword'>of</span>
<a name="line-115"></a> <span class='hs-conid'>Left</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-sel'>_Empty</span> <span class='hs-conid'>Left</span> <span class='hs-varid'>s''</span> <span class='hs-keyword'>of</span>
<a name="line-116"></a> <span class='hs-conid'>Left</span> <span class='hs-conid'>()</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-conid'>()</span>
<a name="line-117"></a> <span class='hs-conid'>Right</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-118"></a> <span class='hs-conid'>Right</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-119"></a> <span class='hs-conid'>Right</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-120"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-121"></a>
<a name="line-122"></a><a name="instance%20AsEmpty%20%5ba%5d"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-123"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>[]</span> <span class='hs-conid'>Prelude</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-124"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-125"></a>
<a name="line-126"></a><a name="instance%20AsEmpty%20(Map%20k%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-127"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-128"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-129"></a>
<a name="line-130"></a><a name="instance%20AsEmpty%20(HashMap%20k%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-131"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>HashMap</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>HashMap</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-132"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-133"></a>
<a name="line-134"></a><a name="instance%20AsEmpty%20(IntMap%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-135"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>IntMap</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>IntMap</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-136"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-137"></a>
<a name="line-138"></a><a name="instance%20AsEmpty%20(Set%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-139"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>Set</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-140"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="instance%20AsEmpty%20(HashSet%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-143"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>HashSet</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-144"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="instance%20AsEmpty%20IntSet"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</span> <span class='hs-conid'>IntSet</span> <span class='hs-keyword'>where</span>
<a name="line-147"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>IntSet</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-148"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-149"></a>
<a name="line-150"></a><a name="instance%20AsEmpty%20(Vector.Vector%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-151"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>Vector</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-152"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-153"></a>
<a name="line-154"></a><a name="instance%20AsEmpty%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'>=></span> <span class='hs-conid'>AsEmpty</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-155"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>Unboxed</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>Unboxed</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-156"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-157"></a>
<a name="line-158"></a><a name="instance%20AsEmpty%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'>=></span> <span class='hs-conid'>AsEmpty</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-159"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>Storable</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>Storable</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-160"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-161"></a>
<a name="line-162"></a><a name="instance%20AsEmpty%20(Seq%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-163"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>Seq</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-164"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-165"></a>
<a name="line-166"></a><a name="instance%20AsEmpty%20StrictB.ByteString"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-167"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>StrictB</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-168"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-169"></a>
<a name="line-170"></a><a name="instance%20AsEmpty%20LazyB.ByteString"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-171"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>LazyB</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-172"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-173"></a>
<a name="line-174"></a><a name="instance%20AsEmpty%20StrictT.Text"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-175"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>StrictT</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-176"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
<a name="line-177"></a>
<a name="line-178"></a><a name="instance%20AsEmpty%20LazyT.Text"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>AsEmpty</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-179"></a> <span class='hs-sel'>_Empty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nearly</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span> <span class='hs-conid'>LazyT</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span>
<a name="line-180"></a> <span class='hs-comment'>{-# INLINE _Empty #-}</span>
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