1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> 4<title>Macro BOOST_LOCAL_FUNCTION_TPL</title> 5<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> 7<link rel="home" href="index.html" title="Chapter 1. Boost.LocalFunction 1.0.0"> 8<link rel="up" href="reference.html#header.boost.local_function_hpp" title="Header <boost/local_function.hpp>"> 9<link rel="prev" href="BOOST_LOCAL_FUNCTION.html" title="Macro BOOST_LOCAL_FUNCTION"> 10<link rel="next" href="BOOST_LOCAL_FUNCTION_ID.html" title="Macro BOOST_LOCAL_FUNCTION_ID"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> 15<td align="center"><a href="../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="BOOST_LOCAL_FUNCTION.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="reference.html#header.boost.local_function_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="BOOST_LOCAL_FUNCTION_ID.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="refentry"> 26<a name="BOOST_LOCAL_FUNCTION_TPL"></a><div class="titlepage"></div> 27<div class="refnamediv"> 28<h2><span class="refentrytitle">Macro BOOST_LOCAL_FUNCTION_TPL</span></h2> 29<p>BOOST_LOCAL_FUNCTION_TPL — This macro is used to start a local function declaration within templates. </p> 30</div> 31<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 32<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="reference.html#header.boost.local_function_hpp" title="Header <boost/local_function.hpp>">boost/local_function.hpp</a>> 33 34</span>BOOST_LOCAL_FUNCTION_TPL(declarations)</pre></div> 35<div class="refsect1"> 36<a name="id904606"></a><h2>Description</h2> 37<p>This macro must be used instead of <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION.html" title="Macro BOOST_LOCAL_FUNCTION">BOOST_LOCAL_FUNCTION</a></code> when declaring a local function within a template. A part from that, this macro has the exact same syntax a <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION.html" title="Macro BOOST_LOCAL_FUNCTION">BOOST_LOCAL_FUNCTION</a></code> (see <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION.html" title="Macro BOOST_LOCAL_FUNCTION">BOOST_LOCAL_FUNCTION</a></code> for more information): </p> 38<pre class="programlisting"><span class="special">{</span> <span class="comment">// Some declarative context within a template.</span> 39 <span class="special">...</span> 40 <span class="identifier">result_type</span> <span class="identifier">BOOST_LOCAL_FUNCTION_TPL</span><span class="special">(</span><span class="identifier">declarations</span><span class="special">)</span> <span class="special">{</span> 41 <span class="special">...</span> <span class="comment">// Body code.</span> 42 <span class="special">}</span> <span class="identifier">BOOST_LOCAL_FUNCTION_NAME_TPL</span><span class="special">(</span><span class="identifier">qualified_name</span><span class="special">)</span> 43 <span class="special">...</span> 44<span class="special">}</span> 45</pre> 46<p>Note that <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION_NAME_TPL.html" title="Macro BOOST_LOCAL_FUNCTION_NAME_TPL">BOOST_LOCAL_FUNCTION_NAME_TPL</a></code> must be used with this macro instead of <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION_NAME.html" title="Macro BOOST_LOCAL_FUNCTION_NAME">BOOST_LOCAL_FUNCTION_NAME</a></code>.</p> 47<p>This macro cannot be portably expanded multiple times on the same line. In these cases, use the <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION_ID_TPL.html" title="Macro BOOST_LOCAL_FUNCTION_ID_TPL">BOOST_LOCAL_FUNCTION_ID_TPL</a></code> macro instead.</p> 48<p><span class="bold"><strong>Note:</strong></span> C++03 does not allow to use <code class="computeroutput">typename</code> outside templates. This library internally manipulates types, these operations require <code class="computeroutput">typename</code> but only within templates. This macro is used to indicate to the library when the enclosing scope is a template so the library can correctly use <code class="computeroutput">typename</code>.</p> 49<p><span class="bold"><strong>See:</strong></span> <a class="link" href="boost_localfunction/tutorial.html" title="Tutorial"> Tutorial</a> section, <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION.html" title="Macro BOOST_LOCAL_FUNCTION">BOOST_LOCAL_FUNCTION</a></code>, <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION_ID_TPL.html" title="Macro BOOST_LOCAL_FUNCTION_ID_TPL">BOOST_LOCAL_FUNCTION_ID_TPL</a></code>, <code class="computeroutput"><a class="link" href="BOOST_LOCAL_FUNCTION_NAME_TPL.html" title="Macro BOOST_LOCAL_FUNCTION_NAME_TPL">BOOST_LOCAL_FUNCTION_NAME_TPL</a></code>. </p> 50</div> 51</div> 52<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 53<td align="left"></td> 54<td align="right"><div class="copyright-footer">Copyright © 2009-2012 Lorenzo 55 Caminiti<p> 56 Distributed under the Boost Software License, Version 1.0 (see accompanying 57 file LICENSE_1_0.txt or a copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 58 </p> 59</div></td> 60</tr></table> 61<hr> 62<div class="spirit-nav"> 63<a accesskey="p" href="BOOST_LOCAL_FUNCTION.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="reference.html#header.boost.local_function_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="BOOST_LOCAL_FUNCTION_ID.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 64</div> 65</body> 66</html> 67
