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invoke_procedure</title>
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<div class="titlepage"><div><div><h5 class="title">
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<a name="fusion.functional.invocation.functions.invoke_proc"></a><a href="invoke_proc.html" title="
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invoke_procedure">
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invoke_procedure</a></h5></div></div></div>
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<a name="fusion.functional.invocation.functions.invoke_proc.description"></a><h6>
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<a name="id658315"></a>
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<a href="invoke_proc.html#fusion.functional.invocation.functions.invoke_proc.description">Description</a>
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</h6>
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<p>
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Calls a <a href="../../concepts/callable.html" title=" Callable Object">Callable
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Object</a> with the arguments from a <a href="../../../sequence.html" title="Sequence">Sequence</a>.
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The result of the call is ignored.
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</p>
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<p>
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The first template parameter can be specialized explicitly to avoid copying
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and/or to control the const qualification of a function object.
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</p>
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<p>
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For pointers to class members corresponding object can be specified as
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a reference, pointer, or smart pointer. In case of the latter, a freestanding
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<tt class="literal">get_pointer</tt> function must be defined (Boost provides
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this function for <tt class="literal">std::auto_ptr</tt> and <a href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span></tt></a>).
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</p>
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<p>
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The target function must not be a pointer to a member object (dereferencing
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such a pointer without returning anything does not make sense, so it
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isn't implemented).
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</p>
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<a name="fusion.functional.invocation.functions.invoke_proc.synopsis"></a><h6>
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<a name="id658425"></a>
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<a href="invoke_proc.html#fusion.functional.invocation.functions.invoke_proc.synopsis">Synopsis</a>
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</h6>
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<pre class="programlisting">
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<span class="keyword">template</span><span class="special"><</span>
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<span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">,</span>
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<span class="keyword">class</span> <span class="identifier">Sequence</span>
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<span class="special">></span>
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<span class="keyword">typename</span> <a href="../metafunctions/invoke_proc.html" title="
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invoke_procedure"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke_procedure</span></tt></a><span class="special"><</span><span class="identifier">Function</span><span class="special">,</span> <span class="identifier">Sequence</span><span class="special">>::</span><span class="identifier">type</span>
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<span class="identifier">invoke_procedure</span><span class="special">(</span><span class="identifier">Function</span> <span class="identifier">f</span><span class="special">,</span> <span class="identifier">Sequence</span> <span class="special">&</span> <span class="identifier">s</span><span class="special">);</span>
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<span class="keyword">template</span><span class="special"><</span>
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<span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">,</span>
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<span class="keyword">class</span> <span class="identifier">Sequence</span>
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<span class="special">></span>
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<span class="keyword">typename</span> <a href="../metafunctions/invoke_proc.html" title="
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invoke_procedure"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke_procedure</span></tt></a><span class="special"><</span><span class="identifier">Function</span><span class="special">,</span> <span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">>::</span><span class="identifier">type</span>
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<span class="identifier">invoke_procedure</span><span class="special">(</span><span class="identifier">Function</span> <span class="identifier">f</span><span class="special">,</span> <span class="identifier">Sequence</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">s</span><span class="special">);</span>
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</pre>
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<a name="fusion.functional.invocation.functions.invoke_proc.parameters"></a><h6>
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<a name="id658804"></a>
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<a href="invoke_proc.html#fusion.functional.invocation.functions.invoke_proc.parameters">Parameters</a>
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</h6>
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Parameter
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</p>
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</th>
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<th>
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<p>
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Requirement
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</p>
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</th>
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<th>
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<p>
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Description
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<tt class="computeroutput"><span class="identifier">f</span></tt>
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</p>
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</td>
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<td>
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<p>
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Model of <a href="../../concepts/callable.html" title=" Callable Object">Callable
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Object</a>
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</p>
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</td>
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<td>
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<p>
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The function to call.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<tt class="computeroutput"><span class="identifier">s</span></tt>
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</p>
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</td>
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<td>
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<p>
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Model of <a href="../../../sequence/concepts/forward_sequence.html" title="Forward
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Sequence">Forward
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Sequence</a>
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</p>
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</td>
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<td>
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<p>
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The arguments.
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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<a name="fusion.functional.invocation.functions.invoke_proc.expression_semantics"></a><h6>
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<a name="id658964"></a>
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<a href="invoke_proc.html#fusion.functional.invocation.functions.invoke_proc.expression_semantics">Expression
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Semantics</a>
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</h6>
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<pre class="programlisting">
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<span class="identifier">invoke_procedure</span><span class="special">(</span><span class="identifier">f</span><span class="special">,</span><span class="identifier">s</span><span class="special">);</span>
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</pre>
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<p>
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<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">void</span></tt>
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</p>
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<p>
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<span class="bold"><b>Semantics</b></span>: Invokes <tt class="computeroutput"><span class="identifier">f</span></tt>
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with the elements in <tt class="computeroutput"><span class="identifier">s</span></tt>
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as arguments.
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</p>
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<p>
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/functional/invocation/invoke_procedure.hpp>
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</p>
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<a name="fusion.functional.invocation.functions.invoke_proc.example"></a><h6>
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<a name="id659092"></a>
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<a href="invoke_proc.html#fusion.functional.invocation.functions.invoke_proc.example">Example</a>
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</h6>
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<pre class="programlisting">
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<a href="../../../container/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special"><</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">v</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
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<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">lambda</span><span class="special">;</span>
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<span class="identifier">invoke_procedure</span><span class="special">(</span><span class="identifier">_1</span> <span class="special">+=</span> <span class="identifier">_2</span><span class="special">,</span> <span class="identifier">v</span><span class="special">);</span>
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<span class="identifier">assert</span><span class="special">(</span><a href="../../../sequence/intrinsic/functions/front.html" title="front"><tt class="computeroutput"><span class="identifier">front</span></tt></a><span class="special">(</span><span class="identifier">v</span><span class="special">)</span> <span class="special">==</span> <span class="number">3</span><span class="special">);</span>
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</pre>
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<a name="fusion.functional.invocation.functions.invoke_proc.see_also"></a><h6>
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<a name="id659332"></a>
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<a href="invoke_proc.html#fusion.functional.invocation.functions.invoke_proc.see_also">See
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also</a>
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</h6>
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<div class="itemizedlist"><ul type="disc">
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<li><a href="invoke.html" title="invoke"><tt class="computeroutput"><span class="identifier">invoke</span></tt></a></li>
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<li><a href="invoke_fobj.html" title="
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invoke_function_object"><tt class="computeroutput"><span class="identifier">invoke_function_object</span></tt></a></li>
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<li><a href="../metafunctions/invoke_proc.html" title="
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invoke_procedure"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke_procedure</span></tt></a></li>
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<li><a href="../../adapters/fused_procedure.html" title="fused_procedure"><tt class="computeroutput"><span class="identifier">fused_procedure</span></tt></a></li>
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</ul></div>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
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Schwinger<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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>)
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</p>
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