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diff --git a/doc/html/boost/proto/is_callable.html b/doc/html/boost/proto/is_callable.html new file mode 100755 index 0000000000..2e5fe3a65d --- /dev/null +++ b/doc/html/boost/proto/is_callable.html @@ -0,0 +1,90 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Struct template is_callable</title> +<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> +<link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> +<link rel="up" href="../../proto/reference.html#header.boost.proto.traits_hpp" title="Header <boost/proto/traits.hpp>"> +<link rel="prev" href="result_of/child_c.html" title="Struct template child_c"> +<link rel="next" href="is_transform.html" title="Struct template is_transform"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> +<table cellpadding="2" width="100%"><tr> +<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> +<td align="center"><a href="../../../../index.html">Home</a></td> +<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> +<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> +<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> +<td align="center"><a href="../../../../more/index.htm">More</a></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="result_of/child_c.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.traits_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="is_transform.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="refentry"> +<a name="boost.proto.is_callable"></a><div class="titlepage"></div> +<div class="refnamediv"> +<h2><span class="refentrytitle">Struct template is_callable</span></h2> +<p>boost::proto::is_callable — Boolean metafunction which tells whether a type is a callable + <a class="link" href="../../PolymorphicFunctionObject.html" title="Concept PolymorphicFunctionObject">PolymorphicFunctionObject</a> or not.</p> +</div> +<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> +<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../proto/reference.html#header.boost.proto.traits_hpp" title="Header <boost/proto/traits.hpp>">boost/proto/traits.hpp</a>> + +</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">></span> +<span class="keyword">struct</span> <a class="link" href="is_callable.html" title="Struct template is_callable">is_callable</a> <span class="special">:</span> <span class="keyword"></span> mpl::bool_<<em class="replaceable"><code>true-or-false</code></em>> <span class="special">{</span> +<span class="special">}</span><span class="special">;</span></pre></div> +<div class="refsect1"> +<a name="id2812426"></a><h2>Description</h2> +<p> + <code class="computeroutput">proto::is_callable<></code> is used by the + <code class="computeroutput"><a class="link" href="when.html" title="Struct template when">proto::when<></a></code> + transform to determine whether a function type <code class="computeroutput">R(A<sub>1</sub>,...A<sub>n</sub>)</code> + is a <a class="link" href="../../CallableTransform.html" title="Concept CallableTransform">CallableTransform</a> or an <a class="link" href="../../ObjectTransform.html" title="Concept ObjectTransform">ObjectTransform</a>. + The former are evaluated using <code class="computeroutput"><a class="link" href="call.html" title="Struct template call">proto::call<></a></code> + and the later with <code class="computeroutput"><a class="link" href="make.html" title="Struct template make">proto::make<></a></code>. + If <code class="computeroutput">proto::is_callable<R>::value</code> is <code class="computeroutput">true</code>, + the function type is a <a class="link" href="../../CallableTransform.html" title="Concept CallableTransform">CallableTransform</a>; otherwise, it is an <a class="link" href="../../ObjectTransform.html" title="Concept ObjectTransform">ObjectTransform</a>. + </p> +<p> + Unless specialized for a type + <code class="computeroutput">T</code>, <code class="computeroutput">proto::is_callable<T>::value</code> + is computed as follows: + </p> +<div class="itemizedlist"><ul class="itemizedlist" type="disc"> +<li class="listitem"><p> + If <code class="computeroutput">T</code> is a template type + <code class="computeroutput">X<Y<sub>0</sub>,...Y<sub>n</sub>></code>, + where all <code class="computeroutput">Y<sub>x</sub></code> are types for + <code class="computeroutput">x</code> in <code class="computeroutput">[0,n]</code>, + <code class="computeroutput">proto::is_callable<T>::value</code> is + <code class="computeroutput">boost::is_same<Y<sub>n</sub>, <a class="link" href="callable.html" title="Struct callable">proto::callable</a>>::value</code>. + </p></li> +<li class="listitem"><p> + If <code class="computeroutput">T</code> is derived from <code class="computeroutput"><a class="link" href="callable.html" title="Struct callable">proto::callable</a></code>, + <code class="computeroutput">proto::is_callable<T>::value</code> is <code class="computeroutput">true</code>. + </p></li> +<li class="listitem"><p> + Otherwise, <code class="computeroutput">proto::is_callable<T>::value</code> + is <code class="computeroutput">false</code>. + </p></li> +</ul></div> +<p> + </p> +</div> +</div> +<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> +<td align="left"></td> +<td align="right"><div class="copyright-footer">Copyright © 2008 Eric Niebler<p> + Distributed under the Boost Software License, Version 1.0. (See accompanying + file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) + </p> +</div></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="result_of/child_c.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../proto/reference.html#header.boost.proto.traits_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="is_transform.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |