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   4 <title>General Type Properties</title>
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  25 <div class="section" lang="en">
  26 <div class="titlepage"><div><div><h4 class="title">
  27 <a name="boost_typetraits.category.value_traits.properties"></a><a class="link" href="properties.html" title="General Type Properties">
  28         General Type Properties</a>
  29 </h4></div></div></div>
  30 <p>
  31           The following templates describe the general properties of a type.
  32         </p>
  33 <p>
  34           <span class="bold"><strong>Synopsis:</strong></span>
  35         </p>
  36 <pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  37 <span class="keyword">struct</span> <a class="link" href="../../reference/alignment_of.html" title="alignment_of">alignment_of</a><span class="special">;</span>
  38
  39 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  40 <span class="keyword">struct</span> <a class="link" href="../../reference/has_new_operator.html" title="has_new_operator">has_new_operator</a><span class="special">;</span>
  41
  42 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  43 <span class="keyword">struct</span> <a class="link" href="../../reference/has_nothrow_assign.html" title="has_nothrow_assign">has_nothrow_assign</a><span class="special">;</span>
  44
  45 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  46 <span class="keyword">struct</span> <a class="link" href="../../reference/has_nothrow_constructor.html" title="has_nothrow_constructor">has_nothrow_constructor</a><span class="special">;</span>
  47
  48 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  49 <span class="keyword">struct</span> <a class="link" href="../../reference/has_nothrow_constructor.html" title="has_nothrow_constructor">has_nothrow_default_constructor</a><span class="special">;</span>
  50
  51 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  52 <span class="keyword">struct</span> <a class="link" href="../../reference/has_nothrow_copy.html" title="has_nothrow_copy">has_nothrow_copy</a><span class="special">;</span>
  53
  54 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  55 <span class="keyword">struct</span> <a class="link" href="../../reference/has_nothrow_copy.html" title="has_nothrow_copy">has_nothrow_copy_constructor</a><span class="special">;</span>
  56
  57 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  58 <span class="keyword">struct</span> <a class="link" href="../../reference/has_trivial_assign.html" title="has_trivial_assign">has_trivial_assign</a><span class="special">;</span>
  59
  60 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  61 <span class="keyword">struct</span> <a class="link" href="../../reference/has_trivial_constructor.html" title="has_trivial_constructor">has_trivial_constructor</a><span class="special">;</span>
  62
  63 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  64 <span class="keyword">struct</span> <a class="link" href="../../reference/has_trivial_constructor.html" title="has_trivial_constructor">has_trivial_default_constructor</a><span class="special">;</span>
  65
  66 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  67 <span class="keyword">struct</span> <a class="link" href="../../reference/has_trivial_copy.html" title="has_trivial_copy">has_trivial_copy</a><span class="special">;</span>
  68
  69 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  70 <span class="keyword">struct</span> <a class="link" href="../../reference/has_trivial_copy.html" title="has_trivial_copy">has_trivial_copy_constructor</a><span class="special">;</span>
  71
  72 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  73 <span class="keyword">struct</span> <a class="link" href="../../reference/has_trivial_destructor.html" title="has_trivial_destructor">has_trivial_destructor</a><span class="special">;</span>
  74
  75 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  76 <span class="keyword">struct</span> <a class="link" href="../../reference/has_virtual_destructor.html" title="has_virtual_destructor">has_virtual_destructor</a><span class="special">;</span>
  77
  78 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  79 <span class="keyword">struct</span> <a class="link" href="../../reference/is_abstract.html" title="is_abstract">is_abstract</a><span class="special">;</span>
  80
  81 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  82 <span class="keyword">struct</span> <a class="link" href="../../reference/is_const.html" title="is_const">is_const</a><span class="special">;</span>
  83
  84 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  85 <span class="keyword">struct</span> <a class="link" href="../../reference/is_empty.html" title="is_empty">is_empty</a><span class="special">;</span>
  86
  87 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  88 <span class="keyword">struct</span> <a class="link" href="../../reference/is_stateless.html" title="is_stateless">is_stateless</a><span class="special">;</span>
  89
  90 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  91 <span class="keyword">struct</span> <a class="link" href="../../reference/is_pod.html" title="is_pod">is_pod</a><span class="special">;</span>
  92
  93 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  94 <span class="keyword">struct</span> <a class="link" href="../../reference/is_polymorphic.html" title="is_polymorphic">is_polymorphic</a><span class="special">;</span>
  95
  96 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  97 <span class="keyword">struct</span> <a class="link" href="../../reference/is_signed.html" title="is_signed">is_signed</a><span class="special">;</span>
  98
  99 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
 100 <span class="keyword">struct</span> <a class="link" href="../../reference/is_unsigned.html" title="is_unsigned">is_unsigned</a><span class="special">;</span>
 101
 102 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
 103 <span class="keyword">struct</span> <a class="link" href="../../reference/is_volatile.html" title="is_volatile">is_volatile</a><span class="special">;</span>
 104
 105 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">N</span> <span class="special">=</span> <span class="number">0</span><span class="special">&gt;</span>
 106 <span class="keyword">struct</span> <a class="link" href="../../reference/extent.html" title="extent">extent</a><span class="special">;</span>
 107
 108 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
 109 <span class="keyword">struct</span> <a class="link" href="../../reference/rank.html" title="rank">rank</a><span class="special">;</span>
 110 </pre>
 111 </div>
 112 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 113 <td align="left"></td>
 114 <td align="right"><div class="copyright-footer">Copyright © 2000, 2006 Adobe Systems Inc, David Abrahams,
 115       Steve Cleary, Beman Dawes, Aleksey Gurtovoy, Howard Hinnant, Jesse Jones, Mat
 116       Marcus, Itay Maman, John Maddock, Alexander Nasonov, Thorsten Ottosen, Robert
 117       Ramey and Jeremy Siek<p>
 118         Distributed under the Boost Software License, Version 1.0. (See accompanying
 119         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>)
 120       </p>
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