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1 2 3 4 5 6 7 8 9 10 11 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Data.HashSet.Lens</title><link href="ocean.css" rel="stylesheet" type="text/css" title="Ocean" /><script src="haddock-util.js" type="text/javascript"></script><script type="text/javascript">//<![CDATA[
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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Data-HashSet-Lens.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">lens-4.13: Lenses, Folds and Traversals</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Copyright</th><td>(C) 2012-15 Edward Kmett</td></tr><tr><th>License</th><td>BSD-style (see the file LICENSE)</td></tr><tr><th>Maintainer</th><td>Edward Kmett <ekmett@gmail.com></td></tr><tr><th>Stability</th><td>provisional</td></tr><tr><th>Portability</th><td>portable</td></tr><tr><th>Safe Haskell</th><td>Trustworthy</td></tr><tr><th>Language</th><td>Haskell98</td></tr></table><p class="caption">Data.HashSet.Lens</p></div><div id="description"><p class="caption">Description</p><div class="doc empty"> </div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><a href="#v:setmapped">setmapped</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a> j, <a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a> j) => <a href="Control-Lens-Type.html#t:IndexPreservingSetter">IndexPreservingSetter</a> (<a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a> i) (<a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a> j) i j</li><li class="src short"><a href="#v:setOf">setOf</a> :: <a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a> a => <a href="Control-Lens-Getter.html#t:Getting">Getting</a> (<a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a> a) s a -> s -> <a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a> a</li></ul></div><div id="interface"><h1>Documentation</h1><div class="top"><p class="src"><a name="v:setmapped" class="def">setmapped</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a> j, <a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a> j) => <a href="Control-Lens-Type.html#t:IndexPreservingSetter">IndexPreservingSetter</a> (<a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a> i) (<a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a> j) i j <a href="src/Data-HashSet-Lens.html#setmapped" class="link">Source</a></p><div class="doc"><p>This <code><a href="Control-Lens-Type.html#t:Setter">Setter</a></code> can be used to change the type of a <code><a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a></code> by mapping
the elements to new values.</p><p>Sadly, you can't create a valid <code><a href="Control-Lens-Type.html#t:Traversal">Traversal</a></code> for a <code>Set</code>, but you can
manipulate it by reading using <code><a href="Control-Lens-Fold.html#v:folded">folded</a></code> and reindexing it via <code><a href="Data-HashSet-Lens.html#v:setmapped">setmapped</a></code>.</p></div></div><div class="top"><p class="src"><a name="v:setOf" class="def">setOf</a> :: <a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a> a => <a href="Control-Lens-Getter.html#t:Getting">Getting</a> (<a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a> a) s a -> s -> <a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a> a <a href="src/Data-HashSet-Lens.html#setOf" class="link">Source</a></p><div class="doc"><p>Construct a set from a <code><a href="Control-Lens-Type.html#t:Getter">Getter</a></code>, <code><a href="Control-Lens-Fold.html#v:Fold">Fold</a></code>, <code><a href="Control-Lens-Traversal.html#v:Traversal">Traversal</a></code>, <code><a href="Control-Lens-Lens.html#v:Lens">Lens</a></code> or <code><a href="Control-Lens-Iso.html#v:Iso">Iso</a></code>.</p><pre><code><a href="Data-HashSet-Lens.html#v:setOf">setOf</a></code> :: <code><a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a></code> a => <code><a href="Control-Lens-Type.html#t:Getter">Getter</a></code> s a -> s -> <code><a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a></code> a
<code><a href="Data-HashSet-Lens.html#v:setOf">setOf</a></code> :: (<code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a></code> a, <code><a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a></code> a) => <code><a href="Control-Lens-Type.html#t:Fold">Fold</a></code> s a -> s -> <code><a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a></code> a
<code><a href="Data-HashSet-Lens.html#v:setOf">setOf</a></code> :: <code><a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a></code> a => <code><a href="Control-Lens-Type.html#t:Iso-39-">Iso'</a></code> s a -> s -> <code><a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a></code> a
<code><a href="Data-HashSet-Lens.html#v:setOf">setOf</a></code> :: <code><a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a></code> a => <code><a href="Control-Lens-Type.html#t:Lens-39-">Lens'</a></code> s a -> s -> <code><a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a></code> a
<code><a href="Data-HashSet-Lens.html#v:setOf">setOf</a></code> :: (<code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Eq.html#t:Eq">Eq</a></code> a, <code><a href="file:///usr/share/doc/libghc-hashable-doc/html/Data-Hashable.html#t:Hashable">Hashable</a></code> a) => <code><a href="Control-Lens-Type.html#t:Traversal-39-">Traversal'</a></code> s a -> s -> <code><a href="file:///usr/share/doc/libghc-unordered-containers-doc/html/Data-HashSet.html#t:HashSet">HashSet</a></code> a
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