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Regenerating/reorganizing docs [SVN r40832]
2007-11-06 12:13:52 +00:00
<html>
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<title> Polymorphic Function
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<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.concepts.poly"></a><a href="poly.html" title=" Polymorphic Function
Object"> Polymorphic Function
Object</a></h4></div></div></div>
<a name="fusion.functional.concepts.poly.description"></a><h5>
<a name="id653507"></a>
<a href="poly.html#fusion.functional.concepts.poly.description">Description</a>
</h5>
<p>
A non-member-pointer <a href="def_callable.html" title=" Deferred
Callable Object">Deferred
Callable Object</a> type.
</p>
<a name="fusion.functional.concepts.poly.refinement_of"></a><h5>
<a name="id653546"></a>
<a href="poly.html#fusion.functional.concepts.poly.refinement_of">Refinement
of</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="reg_callable.html" title=" Regular Callable
Object">Regular Callable
Object</a></li>
<li><a href="def_callable.html" title=" Deferred
Callable Object">Deferred Callable
Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const-qualified Polymorphic Function Object type
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An object or reference to an object of type F
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt></span></dt>
<dd><p>
Argument types
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a1</span>
<span class="special">...</span><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Objects or references to objects with types <tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">T1</span>
<span class="special">...</span><span class="identifier">TN</span></tt></span></dt>
<dd><p>
<tt class="computeroutput"><span class="identifier">T</span></tt>i is <tt class="computeroutput"><span class="identifier">A</span></tt>i <tt class="computeroutput"><span class="special">&amp;</span></tt>
if <tt class="computeroutput"><span class="identifier">a</span></tt>i is an LValue,
same as <tt class="computeroutput"><span class="identifier">A</span></tt>i, otherwise
</p></dd>
</dl>
</div>
<a name="fusion.functional.concepts.poly.expression_requirements"></a><h5>
<a name="id653837"></a>
<a href="poly.html#fusion.functional.concepts.poly.expression_requirements">Expression
requirements</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Return Type
</p>
</th>
<th>
<p>
Runtime Complexity
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">a1</span><span class="special">,</span>
<span class="special">...</span><span class="identifier">aN</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">result_of</span><span class="special">&lt;</span>
<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> <span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
Unspecified
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.concepts.poly.models"></a><h5>
<a name="id654035"></a>
<a href="poly.html#fusion.functional.concepts.poly.models">Models</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li>
function pointers
</li>
<li>
function objects of the Standard Library
</li>
<li>
all Fusion <a href="../adapters.html" title=" Adapters">functional adapters</a>
</li>
</ul></div>
<a name="fusion.functional.concepts.poly.examples"></a><h5>
<a name="id654089"></a>
<a href="poly.html#fusion.functional.concepts.poly.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="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="comment">// Note: Boost.Lambda expressions don't work with __boost_result_of__
</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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