forked from boostorg/fusion
merge from trunk
[SVN r47205]
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Joel de Guzman
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invoke_procedure">
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@ -24,15 +25,15 @@
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</div>
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<div class="section" lang="en">
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<div class="titlepage"><div><div><h5 class="title">
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<a name="fusion.functional.invocation.functions.invoke"></a><a class="link" href="invoke.html" title="invoke">invoke</a>
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</h5></div></div></div>
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<a name="fusion.functional.invocation.functions.invoke"></a><a href="invoke.html" title="invoke">invoke</a></h5></div></div></div>
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<a name="fusion.functional.invocation.functions.invoke.description"></a><h6>
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<a name="id2815145"></a>
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<a class="link" href="invoke.html#fusion.functional.invocation.functions.invoke.description">Description</a>
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<a name="id657347"></a>
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<a href="invoke.html#fusion.functional.invocation.functions.invoke.description">Description</a>
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</h6>
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<p>
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Calls a <a class="link" href="../../concepts/def_callable.html" title="Deferred Callable Object">Deferred
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Callable Object</a> with the arguments from a <a class="link" href="../../../sequence.html" title="Sequence">Sequence</a>.
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Calls a <a href="../../concepts/def_callable.html" title=" Deferred
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Callable Object">Deferred
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Callable Object</a> with the arguments from a <a href="../../../sequence.html" title="Sequence">Sequence</a>.
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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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<p>
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If the target function is a pointer to a class members, the corresponding
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object can be specified as a reference, pointer, or smart pointer. In
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case of the latter, a freestanding <code class="literal">get_pointer</code> function
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must be defined (Boost provides this function for <code class="literal">std::auto_ptr</code>
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and <a href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top"><code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span></code></a>).
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case of the latter, a freestanding <tt class="literal">get_pointer</tt> function
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must be defined (Boost provides this function for <tt class="literal">std::auto_ptr</tt>
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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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<a name="fusion.functional.invocation.functions.invoke.synopsis"></a><h6>
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<a name="id2815236"></a>
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<a class="link" href="invoke.html#fusion.functional.invocation.functions.invoke.synopsis">Synopsis</a>
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<a name="id657450"></a>
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<a href="invoke.html#fusion.functional.invocation.functions.invoke.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 class="link" href="../metafunctions/invoke.html" title="invoke"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke</span></code></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="keyword">typename</span> <a href="../metafunctions/invoke.html" title="invoke"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke</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</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 class="link" href="../metafunctions/invoke.html" title="invoke"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke</span></code></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="keyword">typename</span> <a href="../metafunctions/invoke.html" title="invoke"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke</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</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.parameters"></a><h6>
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<a name="id2815574"></a>
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<a class="link" href="invoke.html#fusion.functional.invocation.functions.invoke.parameters">Parameters</a>
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<a name="id657828"></a>
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<a href="invoke.html#fusion.functional.invocation.functions.invoke.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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@ -95,12 +96,13 @@
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">f</span></code>
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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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A <a class="link" href="../../concepts/def_callable.html" title="Deferred Callable Object">Deferred
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A <a href="../../concepts/def_callable.html" title=" Deferred
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Callable Object">Deferred
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Callable Object</a>
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</p>
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</td>
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@ -113,12 +115,13 @@
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">s</span></code>
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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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A <a class="link" href="../../../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
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A <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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@ -131,43 +134,45 @@
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</tbody>
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</table></div>
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<a name="fusion.functional.invocation.functions.invoke.expression_semantics"></a><h6>
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<a name="id2815718"></a>
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<a class="link" href="invoke.html#fusion.functional.invocation.functions.invoke.expression_semantics">Expression
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<a name="id657989"></a>
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<a href="invoke.html#fusion.functional.invocation.functions.invoke.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</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"><strong>Return type</strong></span>: Return type of <code class="computeroutput"><span class="identifier">f</span></code> when invoked with the elements in
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<code class="computeroutput"><span class="identifier">s</span></code> as its arguments.
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<span class="bold"><b>Return type</b></span>: Return type of <tt class="computeroutput"><span class="identifier">f</span></tt> when invoked with the elements in
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<tt class="computeroutput"><span class="identifier">s</span></tt> as its arguments.
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</p>
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<p>
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<span class="bold"><strong>Semantics</strong></span>: Invokes <code class="computeroutput"><span class="identifier">f</span></code>
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with the elements in <code class="computeroutput"><span class="identifier">s</span></code>
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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 and returns the result of the call expression.
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</p>
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<p>
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/functional/invocation/invoke.hpp>
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</p>
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<a name="fusion.functional.invocation.functions.invoke.example"></a><h6>
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<a name="id2815844"></a>
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<a class="link" href="invoke.html#fusion.functional.invocation.functions.invoke.example">Example</a>
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<a name="id658132"></a>
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<a href="invoke.html#fusion.functional.invocation.functions.invoke.example">Example</a>
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</h6>
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<pre class="programlisting">
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<a href="http://www.sgi.com/tech/stl/plus.html" target="_top"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">plus</span></code></a><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">add</span><span class="special">;</span>
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<span class="identifier">assert</span><span class="special">(</span><span class="identifier">invoke</span><span class="special">(</span><span class="identifier">add</span><span class="special">,</span><a class="link" href="../../../container/generation/functions/make_vector.html" title="make_vector"><code class="computeroutput"><span class="identifier">make_vector</span></code></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">1</span><span class="special">))</span> <span class="special">==</span> <span class="number">2</span><span class="special">);</span>
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<a href="http://www.sgi.com/tech/stl/plus.html" target="_top"><tt class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">plus</span></tt></a><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">add</span><span class="special">;</span>
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<span class="identifier">assert</span><span class="special">(</span><span class="identifier">invoke</span><span class="special">(</span><span class="identifier">add</span><span class="special">,</span><a href="../../../container/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">1</span><span class="special">))</span> <span class="special">==</span> <span class="number">2</span><span class="special">);</span>
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</pre>
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<a name="fusion.functional.invocation.functions.invoke.see_also"></a><h6>
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<a name="id2815996"></a>
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<a class="link" href="invoke.html#fusion.functional.invocation.functions.invoke.see_also">See
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<a name="id658300"></a>
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<a href="invoke.html#fusion.functional.invocation.functions.invoke.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 class="link" href="invoke_proc.html" title="invoke_procedure"><code class="computeroutput"><span class="identifier">invoke_procedure</span></code></a></li>
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<li><a class="link" href="invoke_fobj.html" title="invoke_function_object"><code class="computeroutput"><span class="identifier">invoke_function_object</span></code></a></li>
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<li><a class="link" href="../metafunctions/invoke.html" title="invoke"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke</span></code></a></li>
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<li><a class="link" href="../../adapters/fused.html" title="fused"><code class="computeroutput"><span class="identifier">fused</span></code></a></li>
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<li><a href="invoke_proc.html" title="
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invoke_procedure"><tt class="computeroutput"><span class="identifier">invoke_procedure</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.html" title="invoke"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke</span></tt></a></li>
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<li><a href="../../adapters/fused.html" title="fused"><tt class="computeroutput"><span class="identifier">fused</span></tt></a></li>
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</ul></div>
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</div>
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