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diff --git a/doc/html/boost_typetraits/user_defined.html b/doc/html/boost_typetraits/user_defined.html new file mode 100644 index 0000000000..a933664668 --- /dev/null +++ b/doc/html/boost_typetraits/user_defined.html @@ -0,0 +1,71 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title> User Defined Specializations</title> +<link rel="stylesheet" href="../boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.69.1"> +<link rel="start" href="../index.html" title="The Boost C++ Libraries"> +<link rel="up" href="../boost_typetraits.html" title="Chapter 14. Boost.TypeTraits"> +<link rel="prev" href="category.html" title=" Type Traits by Category"> +<link rel="next" href="intrinsics.html" title=" Support for Compiler Intrinsics"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> +<table cellpadding="2" width="100%"> +<td valign="top"><img alt="boost.png (6897 bytes)" width="277" height="86" src="../../../boost.png"></td> +<td align="center"><a href="../../../index.htm">Home</a></td> +<td align="center"><a href="../../../libs/libraries.htm">Libraries</a></td> +<td align="center"><a href="../../../people/people.htm">People</a></td> +<td align="center"><a href="../../../more/faq.htm">FAQ</a></td> +<td align="center"><a href="../../../more/index.htm">More</a></td> +</table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="category.html"><img src="../images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost_typetraits.html"><img src="../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../images/home.png" alt="Home"></a><a accesskey="n" href="intrinsics.html"><img src="../images/next.png" alt="Next"></a> +</div> +<div class="section" lang="en"> +<div class="titlepage"><div><div><h3 class="title"> +<a name="boost_typetraits.user_defined"></a> User Defined Specializations</h3></div></div></div> +<p> +Occationally the end user may need to provide their own specialization +for one of the type traits - typically where intrinsic compiler support +is required to implement a specific trait fully. +These specializations should derive from boost::<a href="reference.html#boost_typetraits.integral_constant" title=" integral_constant">true_type</a> or boost::<a href="reference.html#boost_typetraits.integral_constant" title=" integral_constant">false_type</a> +as appropriate:</p> +<pre class="programlisting"><code class="literal"><span class="preprocessor">#include</span><span class="special"> <</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">is_pod</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span><span class="preprocessor"> +#include</span><span class="special"> <</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">is_class</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span><span class="preprocessor"> +#include</span><span class="special"> <</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">is_union</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span><span class="keyword"> + +struct</span><span class="identifier"> my_pod</span><span class="special">{};</span><span class="keyword"> +struct</span><span class="identifier"> my_union</span><span class="special"> +{</span><span class="keyword"> + char</span><span class="identifier"> c</span><span class="special">;</span><span class="keyword"> + int</span><span class="identifier"> i</span><span class="special">;</span><span class="special"> +};</span><span class="keyword"> + +namespace</span><span class="identifier"> boost</span><span class="special"> +{</span><span class="keyword"> + template</span><span class="special"><></span><span class="keyword"> + struct</span> <a href="reference.html#boost_typetraits.is_pod" title=" is_pod">is_pod</a><span class="special"><</span><span class="identifier">my_pod</span><span class="special">></span><span class="special"> :</span><span class="keyword"> public</span> <a href="reference.html#boost_typetraits.integral_constant" title=" integral_constant">true_type</a><span class="special">{};</span><span class="keyword"> + + template</span><span class="special"><></span><span class="keyword"> + struct</span> <a href="reference.html#boost_typetraits.is_pod" title=" is_pod">is_pod</a><span class="special"><</span><span class="identifier">my_union</span><span class="special">></span><span class="special"> :</span><span class="keyword"> public</span> <a href="reference.html#boost_typetraits.integral_constant" title=" integral_constant">true_type</a><span class="special">{};</span><span class="keyword"> + + template</span><span class="special"><></span><span class="keyword"> + struct</span> <a href="reference.html#boost_typetraits.is_union" title=" is_union">is_union</a><span class="special"><</span><span class="identifier">my_union</span><span class="special">></span><span class="special"> :</span><span class="keyword"> public</span> <a href="reference.html#boost_typetraits.integral_constant" title=" integral_constant">true_type</a><span class="special">{};</span><span class="keyword"> + + template</span><span class="special"><></span><span class="keyword"> + struct</span> <a href="reference.html#boost_typetraits.is_class" title=" is_class">is_class</a><span class="special"><</span><span class="identifier">my_union</span><span class="special">></span><span class="special"> :</span><span class="keyword"> public</span> <a href="reference.html#boost_typetraits.integral_constant" title=" integral_constant">false_type</a><span class="special">{};</span><span class="special"> +}</span></code></pre> +</div> +<table width="100%"><tr> +<td align="left"></td> +<td align="right"><small>Copyright © 2000, 2005 Adobe Systems Inc, David Abrahams, Steve Cleary, + Beman Dawes, Aleksey Gurtovoy, Howard Hinnant, Jesse Jones, Mat Marcus, + Itay Maman, John Maddock, Thorsten Ottosen, Robert Ramey and Jeremy Siek</small></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="category.html"><img src="../images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost_typetraits.html"><img src="../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../images/home.png" alt="Home"></a><a accesskey="n" href="intrinsics.html"><img src="../images/next.png" alt="Next"></a> +</div> +</body> +</html> |