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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 href="callable.html" title=" Callable Object"> Callable Object</a></h4></div></div></div>
<a name="fusion.functional.concepts.callable.description"></a><h5>
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<a 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>
<a name="fusion.functional.concepts.callable.models"></a><h5>
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<a href="callable.html#fusion.functional.concepts.callable.models">Models</a>
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<div class="itemizedlist"><ul type="disc">
<li>
function pointer types
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member (function or data) pointer types
</li>
<li>
all kinds of function objects
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<a name="fusion.functional.concepts.callable.examples"></a><h5>
<a name="id654407"></a>
<a href="callable.html#fusion.functional.concepts.callable.examples">Examples</a>
</h5>
<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 href="../generation/functions/mk_fused_fobj.html" title="
make_fused_function_object"><tt class="computeroutput"><span class="identifier">make_fused_function_object</span></tt></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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