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| <H2>pointer_to_unary_function</H2> |
| <P><B>Library:</B> <A HREF="2-4.html">General utilities</A></P> |
| |
| <PRE><HR><B><I>pointer_to_unary_function</I></B> <IMG SRC="images/inherits.gif"> <B><I><A HREF="unary-function.html">unary_function</A></I></B><HR></PRE> |
| |
| <UL> |
| <LI><A HREF="#sec1">Local Index</A></LI> |
| <LI><A HREF="#sec2">Summary</A></LI> |
| <LI><A HREF="#sec3">Synopsis</A></LI> |
| <LI><A HREF="#sec4">Description</A></LI> |
| <LI><A HREF="#sec5">Interface</A></LI> |
| <LI><A HREF="#sec6">See Also</A></LI> |
| <LI><A HREF="#sec7">Standards Conformance</A></LI> |
| </UL> |
| <A NAME="sec1"><H3>Local Index</H3></A> |
| No Entries |
| <A NAME="sec2"><H3>Summary</H3></A> |
| <P>A function object class that adapts a pointer to a function, to take the place of a <B><I><A HREF="unary-function.html">unary_function</A></I></B></P> |
| <A NAME="sec3"><H3>Synopsis</H3></A> |
| |
| <PRE>#include <functional> |
| |
| namespace std { |
| template <class Arg, class Result> |
| class pointer_to_unary_function; |
| } |
| </PRE> |
| <A NAME="sec4"><H3>Description</H3></A> |
| <P>The <B><I>pointer_to_unary_function</I></B> class encapsulates a pointer to a single-argument function. The class uses <SAMP>operator()</SAMP> so that the resulting object serves as a function object for that function.</P> |
| <P>The <SAMP><A HREF="ptr-fun.html">ptr_fun</A></SAMP> function is overloaded to create instances of <B><I>pointer_to_unary_function</I></B> when included with the appropriate pointer to a function. </P> |
| <A NAME="sec5"><H3>Interface</H3></A> |
| |
| <UL><PRE>namespace std { |
| |
| template <class Arg, class Result> |
| class pointer_to_unary_function : public |
| unary_function<Arg, Result> { |
| |
| public: |
| explicit pointer_to_unary_function (Result (*f)(Arg)); |
| Result operator() (const Arg&) const; |
| }; |
| } |
| </PRE></UL> |
| <A NAME="sec6"><H3>See Also</H3></A> |
| <P><A HREF="functionobjects.html">Function Objects</A>, <B><I><A HREF="pointer-to-binary-function.html">pointer_to_binary_function</A></I></B>, <SAMP><A HREF="ptr-fun.html">ptr_fun()</A></SAMP>, <B><I><A HREF="unary-function.html">unary_function</A></I></B></P> |
| <A NAME="sec7"><H3>Standards Conformance</H3></A> |
| <P><I>ISO/IEC 14882:1998 -- International Standard for Information Systems -- Programming Language C++, Section 20.3.7</I></P> |
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