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extern/stdcxx/4.2.1/doc/stdlibref/less-equal.html
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<TITLE>less_equal</TITLE>
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<A HREF="less.html"><IMG SRC="images/bprev.gif" WIDTH=20 HEIGHT=21 ALT="Previous file" BORDER=O></A><A HREF="noframes.html"><IMG SRC="images/btop.gif" WIDTH=56 HEIGHT=21 ALT="Top of Document" BORDER=O></A><A HREF="booktoc.html"><IMG SRC="images/btoc.gif" WIDTH=56 HEIGHT=21 ALT="Contents" BORDER=O></A><A HREF="tindex.html"><IMG SRC="images/bindex.gif" WIDTH=56 HEIGHT=21 ALT="Index page" BORDER=O></A><A HREF="lexicographical-compare.html"><IMG SRC="images/bnext.gif" WIDTH=25 HEIGHT=21 ALT="Next file" BORDER=O></A><DIV CLASS="DOCUMENTNAME"><B>Apache C++ Standard Library Reference Guide</B></DIV>
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<H2>less_equal</H2>
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<P><B>Library:</B> <A HREF="2-4.html">General utilities</A></P>
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<PRE><HR><B><I>Does not inherit</I></B><HR></PRE>
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<UL>
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<LI><A HREF="#sec1">Local Index</A></LI>
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<LI><A HREF="#sec2">Summary</A></LI>
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<LI><A HREF="#sec3">Synopsis</A></LI>
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<LI><A HREF="#sec4">Description</A></LI>
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<LI><A HREF="#sec5">Interface</A></LI>
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<LI><A HREF="#sec6">See Also</A></LI>
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<LI><A HREF="#sec7">Standards Conformance</A></LI>
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</UL>
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<A NAME="sec1"><H3>Local Index</H3></A>
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No Entries
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<A NAME="sec2"><H3>Summary</H3></A>
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<P>A binary function object that returns <SAMP>true</SAMP> if its first argument is less than or equal to its second</P>
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<A NAME="sec3"><H3>Synopsis</H3></A>
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<PRE>#include <functional>
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namespace std {
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template <class T>
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struct less_equal;
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}
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</PRE>
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<A NAME="sec4"><H3>Description</H3></A>
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<P><B><I>less_equal</I></B> is a binary function object. Its <SAMP>operator()</SAMP> returns <SAMP>true</SAMP> if <SAMP>x</SAMP> is less than or equal to <SAMP>y</SAMP>. You can pass a <B><I>less_equal</I></B> object to any algorithm that requires a binary function. For example, the <SAMP><A HREF="sort.html">sort()</A></SAMP> algorithm can accept a binary function as an alternate comparison object to sort a sequence. <B><I>less_equal</I></B> would be used in that algorithm in the following manner:</P>
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<UL><PRE>vector<int> vec1;
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.
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.
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.
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sort(vec1.begin(), vec1.end(),less_equal<int>());
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</PRE></UL>
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<P>After this call to <SAMP><A HREF="sort.html">sort()</A></SAMP>, <SAMP>vec1</SAMP> is sorted in ascending order. </P>
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<A NAME="sec5"><H3>Interface</H3></A>
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<UL><PRE>namespace std {
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template <class T>
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struct less_equal : binary_function<T, T, bool> {
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bool operator()(const T&, const T&) const;
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};
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}
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</PRE></UL>
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<A NAME="sec6"><H3>See Also</H3></A>
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<P><B><I><A HREF="binary-function.html">binary_function</A></I></B>, <A HREF="functionobjects.html">Function Objects</A></P>
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<A NAME="sec7"><H3>Standards Conformance</H3></A>
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<P><I>ISO/IEC 14882:1998 -- International Standard for Information Systems -- Programming Language C++, Section 20.3.3</I></P>
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