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<title>Callable Object</title>
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<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.concepts.callable"></a><a class="link" href="callable.html" title="Callable Object">Callable Object</a>
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<h6>
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          <span><a name="fusion.functional.concepts.callable.description"></a></span><a class="link" href="callable.html#fusion.functional.concepts.callable.description">Description</a>
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<p>
          A pointer to a function, a pointer to member function, a pointer to member
          data, or a class type whose objects can appear immediately to the left
          of a function call operator.
        </p>
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<a name="fusion.functional.concepts.callable.h1"></a>
          <span><a name="fusion.functional.concepts.callable.models"></a></span><a class="link" href="callable.html#fusion.functional.concepts.callable.models">Models</a>
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<div class="itemizedlist"><ul class="itemizedlist" type="disc">
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              function pointer types
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              member (function or data) pointer types
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              all kinds of function objects
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          <span><a name="fusion.functional.concepts.callable.examples"></a></span><a class="link" href="callable.html#fusion.functional.concepts.callable.examples">Examples</a>
        </h6>
<pre class="programlisting"><span class="special">&amp;</span> <span class="identifier">a_free_function</span>
<span class="special">&amp;</span> <span class="identifier">a_class</span><span class="special">::</span><span class="identifier">a_static_member_function</span>
<span class="special">&amp;</span> <span class="identifier">a_class</span><span class="special">::</span><span class="identifier">a_nonstatic_data_member</span>
<span class="special">&amp;</span> <span class="identifier">a_class</span><span class="special">::</span><span class="identifier">a_nonstatic_member_function</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;()</span>
<span class="comment">// using namespace boost;</span>
<span class="identifier">bind</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;(),</span> <span class="identifier">_1</span><span class="special">,</span> <span class="number">5</span><span class="special">)</span>
<span class="identifier">lambda</span><span class="special">::</span><span class="identifier">_1</span> <span class="special">+=</span> <span class="identifier">lambda</span><span class="special">::</span><span class="identifier">_2</span><span class="special">;</span>
<span class="identifier">fusion</span><span class="special">::</span><a class="link" href="../generation/functions/mk_fused_fobj.html" title="make_fused_function_object"><code class="computeroutput"><span class="identifier">make_fused_function_object</span></code></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;())</span>
</pre>
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