12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061 |
- <?xml version="1.0" encoding="utf-8"?>
- <!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN"
- "http://www.boost.org/tools/boostbook/dtd/boostbook.dtd">
- <library name="Function" dirname="function" id="function"
- last-revision="$Date$"
- xmlns:xi="http://www.w3.org/2001/XInclude">
- <libraryinfo>
- <author>
- <firstname>Douglas</firstname>
- <surname>Gregor</surname>
- <email>dgregor -at- cs.indiana.edu</email>
- </author>
- <copyright>
- <year>2001</year>
- <year>2002</year>
- <year>2003</year>
- <year>2004</year>
- <holder>Douglas Gregor</holder>
- </copyright>
- <legalnotice>
- <para>Use, modification and distribution is subject to the Boost
- Software License, Version 1.0. (See accompanying file
- <filename>LICENSE_1_0.txt</filename> or copy at <ulink
- url="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</ulink>)</para>
- </legalnotice>
- <librarypurpose>Function object wrappers for deferred calls or callbacks</librarypurpose>
- <librarycategory name="category:higher-order"/>
- </libraryinfo>
- <title>Boost.Function</title>
- <section id="function.intro">
- <title>Introduction</title>
- <para>The Boost.Function library contains a family of class templates
- that are function object wrappers. The notion is similar to a
- generalized callback. It shares features with function pointers in
- that both define a call interface (e.g., a function taking two integer
- arguments and returning a floating-point value) through which some
- implementation can be called, and the implementation that is invoked
- may change throughout the course of the program.</para>
- <para> Generally, any place in which a function pointer would be used
- to defer a call or make a callback, Boost.Function can be used instead
- to allow the user greater flexibility in the implementation of the
- target. Targets can be any 'compatible' function object (or function
- pointer), meaning that the arguments to the interface designated by
- Boost.Function can be converted to the arguments of the target
- function object.</para>
- </section>
- <xi:include href="history.xml"/>
- <xi:include href="tutorial.xml"/>
- <xi:include href="reference.xml"/>
- <xi:include href="faq.xml"/>
- <xi:include href="misc.xml"/>
- <xi:include href="tests.xml"/>
- </library>
|