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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Generics-Deriving-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>experimental</td></tr><tr><th>Portability</th><td>GHC</td></tr><tr><th>Safe Haskell</th><td>None</td></tr><tr><th>Language</th><td>Haskell98</td></tr></table><p class="caption">Generics.Deriving.Lens</p></div><div id="table-of-contents"><p class="caption">Contents</p><ul><li><a href="#g:1">Isomorphisms for <code>GHC.Generics</code></a></li><li><a href="#g:2">Generic Traversal</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>Note: <code>Generics.Deriving</code> exports a number of names that collide with <code>Control.Lens</code>.</p><p>You can use hiding to mitigate this to an extent, and the following import
represents a fair compromise for user code:</p><pre>import Generics.Deriving hiding (from, to)</pre><p>You can use <code><a href="Generics-Deriving-Lens.html#v:generic">generic</a></code> to replace <code><a href="Generics-Deriving.html#v:from">from</a></code> and
<code><a href="Generics-Deriving.html#v:to">to</a></code> from <code>Generics.Deriving</code>.</p></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:generic">generic</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic">Generic</a> a => <a href="Control-Lens-Type.html#t:Iso-39-">Iso'</a> a (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Rep">Rep</a> a b)</li><li class="src short"><a href="#v:generic1">generic1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic1">Generic1</a> f => <a href="Control-Lens-Type.html#t:Iso-39-">Iso'</a> (f a) (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Rep1">Rep1</a> f a)</li><li class="src short"><a href="#v:tinplate">tinplate</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic">Generic</a> a, <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Rep">Rep</a> a), <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Typeable-Internal.html#t:Typeable">Typeable</a> b) => <a href="Control-Lens-Type.html#t:Traversal-39-">Traversal'</a> a b</li><li class="src short"><span class="keyword">class</span> <a href="#t:GTraversal">GTraversal</a> f</li></ul></div><div id="interface"><h1 id="g:1">Isomorphisms for <code>GHC.Generics</code></h1><div class="top"><p class="src"><a name="v:generic" class="def">generic</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic">Generic</a> a => <a href="Control-Lens-Type.html#t:Iso-39-">Iso'</a> a (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Rep">Rep</a> a b) <a href="src/Generics-Deriving-Lens.html#generic" class="link">Source</a></p><div class="doc"><p>Convert from the data type to its representation (or back)</p><pre class="screen"><code class="prompt">>>> </code><strong class="userinput"><code>"hello"^.generic.from generic :: String
</code></strong>"hello"
</pre></div></div><div class="top"><p class="src"><a name="v:generic1" class="def">generic1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic1">Generic1</a> f => <a href="Control-Lens-Type.html#t:Iso-39-">Iso'</a> (f a) (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Rep1">Rep1</a> f a) <a href="src/Generics-Deriving-Lens.html#generic1" class="link">Source</a></p><div class="doc"><p>Convert from the data type to its representation (or back)</p></div></div><h1 id="g:2">Generic Traversal</h1><div class="top"><p class="src"><a name="v:tinplate" class="def">tinplate</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic">Generic</a> a, <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Rep">Rep</a> a), <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Typeable-Internal.html#t:Typeable">Typeable</a> b) => <a href="Control-Lens-Type.html#t:Traversal-39-">Traversal'</a> a b <a href="src/Generics-Deriving-Lens.html#tinplate" class="link">Source</a></p><div class="doc"><p>A <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic">Generic</a></code> <code><a href="Control-Lens-Type.html#t:Traversal">Traversal</a></code> that visits every occurrence
of something <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Typeable-Internal.html#t:Typeable">Typeable</a></code> anywhere in a container.</p><pre class="screen"><code class="prompt">>>> </code><strong class="userinput"><code>allOf tinplate (=="Hello") (1::Int,2::Double,(),"Hello",["Hello"])
</code></strong>True
</pre><pre class="screen"><code class="prompt">>>> </code><strong class="userinput"><code>mapMOf_ tinplate putStrLn ("hello",[(2 :: Int, "world!")])
</code></strong>hello
world!
</pre></div></div><div class="top"><p class="src"><span class="keyword">class</span> <a name="t:GTraversal" class="def">GTraversal</a> f <a href="src/Generics-Deriving-Lens.html#GTraversal" class="link">Source</a></p><div class="doc"><p>Used to traverse <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic">Generic</a></code> data by <code>uniplate</code>.</p></div><div class="subs minimal"><p class="caption">Minimal complete definition</p><p class="src">tinplated</p></div><div class="subs instances"><p id="control.i:GTraversal" class="caption collapser" onclick="toggleSection('i:GTraversal')">Instances</p><div id="section.i:GTraversal" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:V1">V1</a></span> <a href="src/Generics-Deriving-Lens.html#line-103" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:U1">U1</a></span> <a href="src/Generics-Deriving-Lens.html#line-99" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left">(<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Generic">Generic</a> a, <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:Rep">Rep</a> a), <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Typeable-Internal.html#t:Typeable">Typeable</a> * a) => <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:K1">K1</a> i a)</span> <a href="src/Generics-Deriving-Lens.html#line-91" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left">(<a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> f, <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> g) => <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t::-43-:">(:+:)</a> f g)</span> <a href="src/Generics-Deriving-Lens.html#line-111" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left">(<a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> f, <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> g) => <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t::-42-:">(:*:)</a> f g)</span> <a href="src/Generics-Deriving-Lens.html#line-107" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> a => <a href="Generics-Deriving-Lens.html#t:GTraversal">GTraversal</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/GHC-Generics.html#t:M1">M1</a> i c a)</span> <a href="src/Generics-Deriving-Lens.html#line-116" class="link">Source</a></td><td class="doc empty"> </td></tr></table></div></div></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.16.1</p></div></body></html>
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