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| <a name="boost_typetraits.category.value_traits"></a><a class="link" href="value_traits.html" title="Type Traits that Describe the Properties of a Type">Type Traits that |
| Describe the Properties of a Type</a> |
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| <div class="toc"><dl class="toc"> |
| <dt><span class="section"><a href="value_traits/primary.html">Categorizing |
| a Type</a></span></dt> |
| <dt><span class="section"><a href="value_traits/properties.html">General |
| Type Properties</a></span></dt> |
| <dt><span class="section"><a href="value_traits/relate.html">Relationships |
| Between Two Types</a></span></dt> |
| <dt><span class="section"><a href="value_traits/operators.html">Operator |
| Type Traits</a></span></dt> |
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| These traits are all <span class="emphasis"><em>value traits</em></span>, which is to say the |
| traits classes all inherit from <a class="link" href="../reference/integral_constant.html" title="integral_constant">integral_constant</a>, |
| and are used to access some numerical property of a type. Often this is a |
| simple true or false Boolean value, but in a few cases may be some other |
| integer value (for example when dealing with type alignments, or array bounds: |
| see <code class="computeroutput"><a class="link" href="../reference/alignment_of.html" title="alignment_of">alignment_of</a></code>, |
| <code class="computeroutput"><a class="link" href="../reference/rank.html" title="rank">rank</a></code> |
| and <code class="computeroutput"><a class="link" href="../reference/extent.html" title="extent">extent</a></code>). |
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