<!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>Control.Monad.Zip</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[
window.onload = function () {pageLoad();setSynopsis("mini_Control-Monad-Zip.html");};
//]]>
</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">base-4.5.1.0: Basic libraries</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Portability</th><td>portable</td></tr><tr><th>Stability</th><td>experimental</td></tr><tr><th>Maintainer</th><td>libraries@haskell.org</td></tr><tr><th>Safe Haskell</th><td>Safe</td></tr></table><p class="caption">Control.Monad.Zip</p></div><div id="description"><p class="caption">Description</p><div class="doc"><p>Monadic zipping (used for monad comprehensions)
</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="Control-Monad.html#t:Monad">Monad</a> m => <a href="#t:MonadZip">MonadZip</a> m <span class="keyword">where</span><ul class="subs"><li><a href="#v:mzip">mzip</a> :: m a -> m b -> m (a, b)</li><li><a href="#v:mzipWith">mzipWith</a> :: (a -> b -> c) -> m a -> m b -> m c</li><li><a href="#v:munzip">munzip</a> :: m (a, b) -> (m a, m b)</li></ul></li></ul></div><div id="interface"><h1>Documentation</h1><div class="top"><p class="src"><span class="keyword">class</span> <a href="Control-Monad.html#t:Monad">Monad</a> m => <a name="t:MonadZip" class="def">MonadZip</a> m <span class="keyword">where</span></p><div class="doc"><p><code><a href="Control-Monad-Zip.html#t:MonadZip">MonadZip</a></code> type class. Minimal definition: <code><a href="Control-Monad-Zip.html#v:mzip">mzip</a></code> or <code><a href="Control-Monad-Zip.html#v:mzipWith">mzipWith</a></code>
</p><p>Instances should satisfy the laws:
</p><ul><li> Naturality :
</li></ul><pre> liftM (f *** g) (mzip ma mb) = mzip (liftM f ma) (liftM g mb)
</pre><ul><li> Information Preservation:
</li></ul><pre> liftM (const ()) ma = liftM (const ()) mb
==>
munzip (mzip ma mb) = (ma, mb)
</pre></div><div class="subs methods"><p class="caption">Methods</p><p class="src"><a name="v:mzip" class="def">mzip</a> :: m a -> m b -> m (a, b)</p><p class="src"><a name="v:mzipWith" class="def">mzipWith</a> :: (a -> b -> c) -> m a -> m b -> m c</p><p class="src"><a name="v:munzip" class="def">munzip</a> :: m (a, b) -> (m a, m b)</p></div><div class="subs instances"><p id="control.i:MonadZip" class="caption collapser" onclick="toggleSection('i:MonadZip')">Instances</p><div id="section.i:MonadZip" class="show"><table><tr><td class="src"><a href="Control-Monad-Zip.html#t:MonadZip">MonadZip</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 2.11.0</p></div></body></html>
distrib
>
Mageia
>
5
>
i586
>
media
>
core-release
>
by-pkgid
>
6e204a966e8c42d976f99a1700ce5f20
>
files
>
2232
