forked from boostorg/fusion
revises function object concepts and functional module documenation to reflect
boost::result_of-based result computation [SVN r38209]
This commit is contained in:
Tobias Schwinger
@ -30,7 +30,7 @@
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invoke_function_object">
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invoke_function_object</a></h5></div></div></div>
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<a name="fusion.functional.invocation.functions.invoke_fobj.description"></a><h6>
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<a name="id1207378"></a>
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<a name="id1245192"></a>
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<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.description">Description</a>
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</h6>
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<p>
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@ -38,19 +38,12 @@
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Object">Polymorphic Function
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Object</a> with the arguments from a <a href="../../../sequences.html" title="Sequences">Sequence</a>.
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</p>
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<p>
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The corresponding metafunction, <a href="../metafunctions/invoke_fobj.html" title="
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invoke_function_object"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke_function_object</span></code></a>, does
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not define a <code class="computeroutput"><span class="identifier">type</span></code> member,
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if the nested <code class="computeroutput"><span class="identifier">result</span></code>
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class template of the target function object is empty.
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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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<a name="fusion.functional.invocation.functions.invoke_fobj.synopsis"></a><h6>
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<a name="id1207477"></a>
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<a name="id1245241"></a>
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<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.synopsis">Synopsis</a>
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</h6>
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<pre class="programlisting">
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@ -71,7 +64,7 @@
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<span class="identifier">invoke_function_object</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_fobj.parameters"></a><h6>
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<a name="id1207807"></a>
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<a name="id1245574"></a>
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<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.parameters">Parameters</a>
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</h6>
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<div class="informaltable"><table class="table">
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@ -81,38 +74,70 @@
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<col>
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</colgroup>
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<thead><tr>
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<th>Parameter</th>
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<th>Requirement</th>
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<th>Description</th>
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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><code class="computeroutput"><span class="identifier">f</span></code></td>
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<td>Model
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of <a href="../../concepts/poly.html" title=" Polymorphic Function
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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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</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/poly.html" title=" Polymorphic Function
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Object">Polymorphic
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Function Object</a>
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</td>
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<td>The function object to call.</td>
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Function 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 object 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><code class="computeroutput"><span class="identifier">s</span></code></td>
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<td>Model
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of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
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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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</p>
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</td>
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<td>
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<p>
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Model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
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Sequence">Forward
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Sequence</a>
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</td>
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<td>The arguments.</td>
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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_fobj.expression_semantics"></a><h6>
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<a name="id1207911"></a>
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<a name="id1245720"></a>
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<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.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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<span class="identifier">invoke_function_object</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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@ -124,24 +149,25 @@
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as arguments and returns the result of the call expression.
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</p>
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<a name="fusion.functional.invocation.functions.invoke_fobj.header"></a><h6>
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<a name="id1207918"></a>
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<a name="id1245839"></a>
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<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.header">Header</a>
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</h6>
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<pre class="programlisting">
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">invocation</span><span class="special">/</span><span class="identifier">invoke_function_object</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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</pre>
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<a name="fusion.functional.invocation.functions.invoke_fobj.example"></a><h6>
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<a name="id1208116"></a>
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<a name="id1245933"></a>
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<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.example">Example</a>
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</h6>
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<pre class="programlisting">
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<span class="keyword">struct</span> <span class="identifier">sub</span>
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<span class="special">{</span>
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<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">_</span><span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">result</span>
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<span class="special">{</span>
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<span class="keyword">typedef</span> <span class="identifier">T</span> <span class="identifier">type</span><span class="special">;</span>
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<span class="special">};</span>
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span>
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Self</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">result</span><span class="special"><</span> <span class="identifier">Self</span><span class="special">(</span><span class="identifier">T</span><span class="special">,</span><span class="identifier">T</span><span class="special">)</span> <span class="special">></span>
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<span class="special">{</span> <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">remove_reference</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">type</span><span class="special">;</span> <span class="special">};</span>
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<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">></span>
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<span class="identifier">T</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="identifier">lhs</span><span class="special">,</span> <span class="identifier">T</span> <span class="identifier">rhs</span><span class="special">)</span> <span class="keyword">const</span>
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@ -157,7 +183,7 @@
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<span class="special">}</span>
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</pre>
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<a name="fusion.functional.invocation.functions.invoke_fobj.see_also"></a><h6>
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<a name="id1208496"></a>
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<a name="id1246417"></a>
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<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.see_also">See
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also</a>
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</h6>
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