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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/System-Exit-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) 2013-15 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>Control.Exception</td></tr><tr><th>Safe Haskell</th><td>None</td></tr><tr><th>Language</th><td>Haskell98</td></tr></table><p class="caption">System.Exit.Lens</p></div><div id="description"><p class="caption">Description</p><div class="doc"><p>These prisms can be used with the combinators in <a href="Control-Exception-Lens.html">Control.Exception.Lens</a>.</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"><span class="keyword">class</span> <a href="#t:AsExitCode">AsExitCode</a> t <span class="keyword">where</span><ul class="subs"><li><a href="#v:_ExitCode">_ExitCode</a> :: <a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a> t <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/System-Exit.html#t:ExitCode">ExitCode</a></li></ul></li><li class="src short"><a href="#v:_ExitFailure">_ExitFailure</a> :: <a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> t => <a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a> t <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a></li><li class="src short"><a href="#v:_ExitSuccess">_ExitSuccess</a> :: <a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> t => <a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a> t ()</li><li class="src short"><span class="keyword">pattern</span> <a href="#v:ExitFailure_">ExitFailure_</a> :: () => <a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> s => <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a> -> s</li><li class="src short"><span class="keyword">pattern</span> <a href="#v:ExitSuccess_">ExitSuccess_</a> :: () => <a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> s => s</li></ul></div><div id="interface"><h1>Documentation</h1><div class="top"><p class="src"><span class="keyword">class</span> <a name="t:AsExitCode" class="def">AsExitCode</a> t <span class="keyword">where</span> <a href="src/System-Exit-Lens.html#AsExitCode" class="link">Source</a></p><div class="doc"><p>Exit codes that a program can return with:</p></div><div class="subs minimal"><p class="caption">Minimal complete definition</p><p class="src">Nothing</p></div><div class="subs methods"><p class="caption">Methods</p><p class="src"><a name="v:_ExitCode" class="def">_ExitCode</a> :: <a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a> t <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/System-Exit.html#t:ExitCode">ExitCode</a> <a href="src/System-Exit-Lens.html#_ExitCode" class="link">Source</a></p></div><div class="subs instances"><p id="control.i:AsExitCode" class="caption collapser" onclick="toggleSection('i:AsExitCode')">Instances</p><div id="section.i:AsExitCode" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/System-Exit.html#t:ExitCode">ExitCode</a></span> <a href="src/System-Exit-Lens.html#line-48" class="link">Source</a></td><td class="doc empty"> </td></tr><tr><td class="src clearfix"><span class="inst-left"><a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Exception-Base.html#t:SomeException">SomeException</a></span> <a href="src/System-Exit-Lens.html#line-52" class="link">Source</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:_ExitFailure" class="def">_ExitFailure</a> :: <a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> t => <a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a> t <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a> <a href="src/System-Exit-Lens.html#_ExitFailure" class="link">Source</a></p><div class="doc"><p>indicates program failure with an exit code. The exact interpretation of the code is operating-system dependent. In particular, some values may be prohibited (e.g. 0 on a POSIX-compliant system).</p><pre><code><a href="System-Exit-Lens.html#v:_ExitFailure">_ExitFailure</a></code> :: <code><a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a></code> <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/System-Exit.html#t:ExitCode">ExitCode</a></code> <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a></code>
<code><a href="System-Exit-Lens.html#v:_ExitFailure">_ExitFailure</a></code> :: <code><a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a></code> <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Exception-Base.html#t:SomeException">SomeException</a></code> <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a></code>
</pre></div></div><div class="top"><p class="src"><a name="v:_ExitSuccess" class="def">_ExitSuccess</a> :: <a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> t => <a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a> t () <a href="src/System-Exit-Lens.html#_ExitSuccess" class="link">Source</a></p><div class="doc"><p>indicates successful termination;</p><pre><code><a href="System-Exit-Lens.html#v:_ExitSuccess">_ExitSuccess</a></code> :: <code><a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a></code> <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/System-Exit.html#t:ExitCode">ExitCode</a></code> ()
<code><a href="System-Exit-Lens.html#v:_ExitSuccess">_ExitSuccess</a></code> :: <code><a href="Control-Lens-Type.html#t:Prism-39-">Prism'</a></code> <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Control-Exception-Base.html#t:SomeException">SomeException</a></code> ()
</pre></div></div><div class="top"><p class="src"><span class="keyword">pattern</span> <a name="v:ExitFailure_" class="def">ExitFailure_</a> :: () => <a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> s => <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.8.2.0/Data-Int.html#t:Int">Int</a> -> s <a href="src/System-Exit-Lens.html#ExitFailure_" class="link">Source</a></p></div><div class="top"><p class="src"><span class="keyword">pattern</span> <a name="v:ExitSuccess_" class="def">ExitSuccess_</a> :: () => <a href="System-Exit-Lens.html#t:AsExitCode">AsExitCode</a> s => s <a href="src/System-Exit-Lens.html#ExitSuccess_" class="link">Source</a></p></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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