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<P>&copy;Copyright 1996 Rogue Wave Software</P>
<H2>greater</H2>
<HR><PRE>     Function Object</PRE><HR>
<A NAME="Summary"><H3>Summary</H3></A>
<P>Binary function object that returns <SAMP>true</SAMP> if its first argument is greater than its second.</P>
<H3>Contents</H3>
<UL>
<A HREF="#Synopsis"><LI>Synopsis</LI></A>
<A HREF="#Description"><LI>Description</LI></A>
<A HREF="#Warnings"><LI>Warnings</LI></A>
<A HREF="#See Also"><LI>See Also</LI></A>
</UL>
<A NAME="Synopsis"><H3>Synopsis</H3></A>
<PRE>#include &#60;functional></PRE>
<PRE>
template &#60;class T>
struct <B>greater</B> : binary_function&#60;T, T, bool> {
  typedef typename binary_function&#60;T, T, bool>::second_argument_type 
                                                second_argument_type;
  typedef typename binary_function&#60;T, T, bool>::first_argument_type 
                                                first_argument_type;
  typedef typename binary_function&#60;T, T, bool>::result_type 
                                                result_type;
  bool operator() (const T&#38;, const T&#38;) const;
};
</PRE>
<A NAME="Description"><H3>Description</H3></A>
<P><B><I>greater</B></I> is a binary function object.  Its <SAMP>operator()</SAMP> returns <SAMP>true</SAMP> if <SAMP>x</SAMP> is greater than <SAMP>y</SAMP>.  You can pass a <B><I>greater</B></I> object to any algorithm that requires a binary function.  For example, the <A HREF="tra_4787.htm"><B><I>transform</B></I></A> algorithm applies a binary operation to corresponding values in two collections and stores the result of the function.  <B><I>greater</B></I> would be used in that algorithm in the following manner:</P>
<PRE>vector&#60;int> vec1;</PRE>
<PRE>vector&#60;int> vec2;
vector&#60;int> vecResult;
.
.
.
transform(vec1.begin(), vec1.end(),          vec2.begin(),  vecResult.begin(), <B>greater&#60;int>()</B>);</PRE>
<PRE></PRE><P>After this call to <A HREF="tra_4787.htm"><B><I>transform</B></I></A>, <SAMP>vecResult(n)</SAMP> will contain a "1" if <SAMP>vec1(n)</SAMP> was greater than  <SAMP>vec2(n)</SAMP> or a "0" if <SAMP>vec1(n)</SAMP> was less than or equal to <SAMP>vec2(n)</SAMP>.</P>
<A NAME="Warnings"><H3>Warnings</H3></A>
<P>If your compiler does not support default template parameters, then you need to always supply the <SAMP>Allocator</SAMP> template argument.  For instance, you'll have to write :</P>
<P><SAMP>vector&#60;int, allocator></SAMP></P>
<P>instead of </P>
<P><SAMP>vector&#60;int></SAMP></P>
<A NAME="See Also"><H3>See Also</H3></A>
<P><A HREF="Fun_7437.htm"><B><I>Function Objects</B></I></A></P>
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