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sugar/doc/Container.html

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update docs
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>3&nbsp;Container</title><link rel="stylesheet" type="text/css" href="scribble.css" title="default"/><link rel="stylesheet" type="text/css" href="racket.css" title="default"/><link rel="stylesheet" type="text/css" href="manual-style.css" title="default"/><link rel="stylesheet" type="text/css" href="manual-racket.css" title="default"/><script type="text/javascript" src="scribble-common.js"></script><script type="text/javascript" src="manual-racket.js"></script><!--[if IE 6]><style type="text/css">.SIEHidden { overflow: hidden; }</style><![endif]--></head><body id="scribble-racket-lang-org"><div class="tocset"><div class="tocview"><div class="tocviewlist tocviewlisttopspace"><div class="tocviewtitle"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,&quot;tocview_0&quot;);">&#9660;</a></td><td></td><td><a href="index.html" class="tocviewlink" data-pltdoc="x">Sugar:<span class="mywbr"> &nbsp;</span> readability &amp; convenience library</a></td></tr></table></div><div class="tocviewsublistonly" style="display: block;" id="tocview_0"><table cellspacing="0" cellpadding="0"><tr><td align="right">1&nbsp;</td><td><a href="Installation___updates.html" class="tocviewlink" data-pltdoc="x">Installation &amp; updates</a></td></tr><tr><td align="right">2&nbsp;</td><td><a href="Coercion.html" class="tocviewlink" data-pltdoc="x">Coercion</a></td></tr><tr><td align="right">3&nbsp;</td><td><a href="Container.html" class="tocviewselflink" data-pltdoc="x">Container</a></td></tr><tr><td align="right">4&nbsp;</td><td><a href="Len.html" class="tocviewlink" data-pltdoc="x">Len</a></td></tr><tr><td align="right">5&nbsp;</td><td><a href="License___source_code.html" class="tocviewlink" data-pltdoc="x">License &amp; source code</a></td></tr><tr><td align="right"></td><td><a href="doc-index.html" class="tocviewlink" data-pltdoc="x">Index</a></td></tr></table></div></div></div><div class="tocsub"><div class="tocsubtitle">On this page:</div><table class="tocsublist" cellspacing="0"><tr><td><a href="#%28def._%28%28lib._sugar%2Fcontainer..rkt%29._get%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">get</span></span></a></td></tr><tr><td><a href="#%28def._%28%28lib._sugar%2Fcontainer..rkt%29._in~3f%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">in?</span></span></a></td></tr></table></div></div><div class="maincolumn"><div class="main"><div class="versionbox"><span class="version">6.0.1.13</span></div><div class="navsettop"><span class="navleft"><div class="nosearchform"></div>&nbsp;&nbsp;</span><span class="navright">&nbsp;&nbsp;<a href="Coercion.html" title="backward to &quot;2 Coercion&quot;" data-pltdoc="x">&larr; prev</a>&nbsp;&nbsp;<a href="index.html" title="up to &quot;Sugar: readability &amp; convenience library&quot;" data-pltdoc="x">up</a>&nbsp;&nbsp;<a href="Len.html" title="forward to &quot;4 Len&quot;" data-pltdoc="x">next &rarr;</a></span>&nbsp;</div><h3>3<tt>&nbsp;</tt><a name="(part._.Container)"></a><a name="(mod-path._sugar/container)"></a>Container</h3><p><table cellspacing="0" cellpadding="0" class="defmodule"><tr><td align="left"><span class="hspace">&nbsp;</span><span class="RktPn">(</span><span class="RktSym"><a href="http://docs.racket-lang.org/reference/require.html#%28form._%28%28lib._racket%2Fprivate%2Fbase..rkt%29._require%29%29" class="RktStxLink" data-pltdoc="x">require</a></span><span class="stt"> </span><a href="Container.html" class="RktModLink" data-pltdoc="x"><span class="RktSym">sugar/container</span></a><span class="RktPn">)</span></td><td align="right"><span class="RpackageSpec"><span class="Smaller">&nbsp;package:</span> <span class="stt">sugar</span></span></td></tr></table></p><p>Type-neutral functions for getting elements out of a container, or testing membership.</p><p><div class="SIntrapara"><blockquote class="SVInsetFlow"><tab