boost_fusion/doc/html/fusion/algorithms/concepts/poly.html

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<title> Polymorphic Function
        Object</title>
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<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.algorithms.concepts.poly"></a><a href="poly.html" title=" Polymorphic Function
        Object"> Polymorphic Function
        Object</a></h4></div></div></div>
<a name="fusion.algorithms.concepts.poly.description"></a><h5>
<a name="id1080544"></a>
          <a href="poly.html#fusion.algorithms.concepts.poly.description">Description</a>
        </h5>
<p>
          A type of function object with a nested metafunction <code class="computeroutput"><span class="identifier">result</span></code>.
          <code class="computeroutput"><span class="identifier">result</span></code> returns the result
          type of calling the function object, given the argument types.
        </p>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><code class="computeroutput"><span class="identifier">F</span></code></span></dt>
<dd>
            A Polymorphic Function Object type
          </dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">f</span></code></span></dt>
<dd>
            A Polymorphic Function Object
          </dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">T1</span>
          <span class="special">...</span><span class="identifier">TN</span></code></span></dt>
<dd>
            Arbitrary types
          </dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">t1</span>
          <span class="special">...</span><span class="identifier">tN</span></code></span></dt>
<dd>
            Objects with types <code class="computeroutput"><span class="identifier">T1</span> <span class="special">...</span><span class="identifier">TN</span></code>
</dd>
</dl>
</div>
<a name="fusion.algorithms.concepts.poly.refinement_of"></a><h5>
<a name="id1080698"></a>
          <a href="poly.html#fusion.algorithms.concepts.poly.refinement_of">Refinement
          of</a>
        </h5>
<p>
          MPL Metafunction Class
        </p>
<a name="fusion.algorithms.concepts.poly.expression_requirements"></a><h5>
<a name="id1080725"></a>
          <a href="poly.html#fusion.algorithms.concepts.poly.expression_requirements">Expression
          requirements</a>
        </h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>Expression</th>
<th>Return Type</th>
<th>Runtime
                Complexity</th>
</tr></thead>
<tbody><tr>
<td><code class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">t1</span><span class="special">,</span> <span class="special">...</span><span class="identifier">tN</span><span class="special">)</span></code></td>
<td><code class="computeroutput"><span class="identifier">F</span><span class="special">::</span><span class="identifier">result</span><span class="special">&lt;</span><span class="identifier">T1</span><span class="special">,</span> <span class="special">...</span><span class="identifier">TN</span><span class="special">&gt;::</span><span class="identifier">type</span></code></td>
<td>Unspecified</td>
</tr></tbody>
</table></div>
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