forked from boostorg/fusion
Eric Niebler
b0a18ff5c1
https://svn.boost.org/svn/boost/trunk ........ r42194 | anthonyw | 2007-12-19 23:46:00 -0800 (Wed, 19 Dec 2007) | 1 line added missing parentheses ........ r42195 | anthonyw | 2007-12-20 00:37:02 -0800 (Thu, 20 Dec 2007) | 1 line added hardware_concurrency support for apple, freebsd and sun platforms ........ r42196 | niels_dekker | 2007-12-20 01:09:44 -0800 (Thu, 20 Dec 2007) | 1 line Removed "mark-expected-failures" from value_init_test, for both Borland and GCC, as value_init.hpp changeset [41942] provides a workaround for them. ........ r42202 | fmhess | 2007-12-20 06:39:53 -0800 (Thu, 20 Dec 2007) | 6 lines Made putting the name of a typedef inside a "classname" element successfully produce a link to the typedef's reference documentation, or to the typedef's synopsis if that is all it has. ........ r42217 | vladimir_prus | 2007-12-20 13:18:47 -0800 (Thu, 20 Dec 2007) | 1 line Explain a couple of gcc limitations with precompiled headers ........ r42220 | matias | 2007-12-20 13:56:39 -0800 (Thu, 20 Dec 2007) | 1 line add explicit std::string initialization ........ r42221 | matias | 2007-12-20 13:59:18 -0800 (Thu, 20 Dec 2007) | 1 line add license to each html page ........ r42222 | matias | 2007-12-20 14:15:11 -0800 (Thu, 20 Dec 2007) | 1 line Time out: test_bimap_property_map @ gcc-3.4.6_linux_x86_64 ........ r42223 | djowel | 2007-12-20 15:24:28 -0800 (Thu, 20 Dec 2007) | 1 line Removing fusion variant adapter ........ r42224 | djowel | 2007-12-20 15:28:26 -0800 (Thu, 20 Dec 2007) | 1 line Removing fusion variant adapter ........ r42227 | nmusatti | 2007-12-20 23:03:44 -0800 (Thu, 20 Dec 2007) | 1 line Increased the latest supported version to 5.9.3, corresponding to the December 2007 update. ........ r42228 | anthonyw | 2007-12-21 02:54:59 -0800 (Fri, 21 Dec 2007) | 1 line Updated thread ID test ........ r42229 | anthonyw | 2007-12-21 03:05:37 -0800 (Fri, 21 Dec 2007) | 1 line Markup hardware_concurrency failure as expected on tru64 platforms, as support is not implemented ........ r42234 | dgregor | 2007-12-21 13:18:17 -0800 (Fri, 21 Dec 2007) | 1 line Reduce header dependencies, from Shunsuke Sogame. Fixes #1535 ........ [SVN r42236]
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<div class="titlepage"><div><div><h4 class="title">
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<a name="fusion.functional.adapters.fused_function_object"></a><a href="fused_function_object.html" title="fused_function_object">fused_function_object</a></h4></div></div></div>
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<a name="fusion.functional.adapters.fused_function_object.description"></a><h5>
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<a name="id664673"></a>
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<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.description">Description</a>
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</h5>
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<p>
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An unary <a href="../concepts/poly.html" title=" Polymorphic Function
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Object">Polymorphic Function
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Object</a> adapter template for a <a href="../concepts/poly.html" title=" Polymorphic Function
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Object">Polymorphic
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Function Object</a> target function. It takes a <a href="../../sequence/concepts/forward_sequence.html" title="Forward
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Sequence">Forward
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Sequence</a> that contains the arguments for the target function.
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</p>
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<p>
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The type of the target function is allowed to be const qualified or a reference.
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Const qualification is preserved and propagated appropriately (in other
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words, only const versions of <tt class="literal">operator()</tt> can be used
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for an target function object that is const or, if the target function
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object is held by value, the adapter is const).
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</p>
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<p>
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/functional/adapter/fused_function_object.hpp>
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</p>
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<a name="fusion.functional.adapters.fused_function_object.synopsis"></a><h5>
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<a name="id664755"></a>
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<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.synopsis">Synopsis</a>
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</h5>
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<pre class="programlisting">
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Function</span><span class="special">></span>
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<span class="keyword">class</span> <span class="identifier">fused_function_object</span><span class="special">;</span>
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</pre>
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<a name="fusion.functional.adapters.fused_function_object.template_parameters"></a><h5>
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<a name="id664839"></a>
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<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.template_parameters">Template
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parameters</a>
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</h5>
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<div class="informaltable"><table class="table">
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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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Description
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</p>
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</th>
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<th>
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<p>
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Default
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</p>
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<p>
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<tt class="computeroutput"><span class="identifier">Function</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 href="../concepts/poly.html" title=" Polymorphic Function
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Object">Polymorphic Function
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Object</a> type
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</p>
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</td>
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<td>
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<p>
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</p>
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</td>
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</tr></tbody>
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</table></div>
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<a name="fusion.functional.adapters.fused_function_object.model_of"></a><h5>
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<a name="id664956"></a>
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<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.model_of">Model
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of</a>
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</h5>
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<div class="itemizedlist"><ul type="disc">
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<li><a href="../concepts/poly.html" title=" Polymorphic Function
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Object">Polymorphic Function
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Object</a></li>
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<li><a href="../concepts/def_callable.html" title=" Deferred
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Callable Object">Deferred Callable
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Object</a></li>
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</ul></div>
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<div class="variablelist">
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<p class="title"><b>Notation</b></p>
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<dl>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">R</span></tt></span></dt>
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<dd><p>
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A possibly const qualified <a href="../concepts/poly.html" title=" Polymorphic Function
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Object">Polymorphic
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Function Object</a> type or reference type thereof
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">r</span></tt></span></dt>
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<dd><p>
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An object convertible to <tt class="computeroutput"><span class="identifier">R</span></tt>
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">s</span></tt></span></dt>
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<dd><p>
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A <a href="../../sequence.html" title="Sequence">Sequence</a> of arguments that
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are accepted by <tt class="computeroutput"><span class="identifier">r</span></tt>
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
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<dd><p>
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An instance of <tt class="computeroutput"><span class="identifier">fused</span><span class="special"><</span><span class="identifier">R</span><span class="special">></span></tt>
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</p></dd>
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</dl>
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</div>
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<a name="fusion.functional.adapters.fused_function_object.expression_semantics"></a><h5>
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<a name="id665176"></a>
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<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.expression_semantics">Expression
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Semantics</a>
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</h5>
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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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<p>
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Expression
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</p>
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</th>
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<th>
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<p>
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Semantics
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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">fused_function_object</span><span class="special"><</span><span class="identifier">R</span><span class="special">>(</span><span class="identifier">r</span><span class="special">)</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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Creates a fused function as described above, initializes the target
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function with <tt class="computeroutput"><span class="identifier">r</span></tt>.
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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">fused_function_object</span><span class="special"><</span><span class="identifier">R</span><span class="special">>()</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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Creates a fused function as described above, attempts to use <tt class="computeroutput"><span class="identifier">R</span></tt>'s default constructor.
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</p>
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</td>
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</tr>
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<p>
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<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</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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Calls <tt class="computeroutput"><span class="identifier">r</span></tt> with the
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elements in <tt class="computeroutput"><span class="identifier">s</span></tt> as
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its 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.adapters.fused_function_object.example"></a><h5>
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<a name="id665433"></a>
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<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.example">Example</a>
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</h5>
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<pre class="programlisting">
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<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">SeqOfSeqs</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Func</span><span class="special">></span>
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<span class="keyword">typename</span> <a href="../../algorithm/transformation/metafunctions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">transform</span></tt></a><span class="special"><</span> <span class="identifier">zip_view</span><span class="special"><</span><span class="identifier">SeqOfSeqs</span><span class="special">></span> <span class="keyword">const</span><span class="special">,</span>
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<span class="identifier">fused_function_object</span><span class="special"><</span><span class="identifier">Func</span> <span class="keyword">const</span> <span class="special">&></span> <span class="special">>::</span><span class="identifier">type</span>
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<span class="identifier">n_ary_transform</span><span class="special">(</span><span class="identifier">SeqOfSeqs</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">s</span><span class="special">,</span> <span class="identifier">Func</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">f</span><span class="special">)</span>
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<span class="special">{</span>
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<span class="keyword">return</span> <a href="../../algorithm/transformation/functions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a><span class="special">(</span><span class="identifier">zip_view</span><span class="special"><</span><span class="identifier">SeqOfSeqs</span><span class="special">>(</span><span class="identifier">s</span><span class="special">),</span>
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<span class="identifier">fused_function_object</span><span class="special"><</span><span class="identifier">Func</span> <span class="keyword">const</span> <span class="special">&>(</span><span class="identifier">f</span><span class="special">));</span>
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<span class="special">}</span>
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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">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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<span class="special">{</span>
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<span class="keyword">return</span> <span class="identifier">lhs</span> <span class="special">-</span> <span class="identifier">rhs</span><span class="special">;</span>
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<span class="special">}</span>
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<span class="special">};</span>
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<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
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<span class="special">{</span>
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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">float</span><span class="special">></span> <span class="identifier">a</span><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">2.0f</span><span class="special">);</span>
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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">float</span><span class="special">></span> <span class="identifier">b</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">1.5f</span><span class="special">);</span>
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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">float</span><span class="special">></span> <span class="identifier">c</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">0.5f</span><span class="special">);</span>
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<span class="identifier">assert</span><span class="special">(</span><span class="identifier">c</span> <span class="special">==</span> <span class="identifier">n_ary_transform</span><span class="special">(</span><a href="../../container/generation/functions/vector_tie.html" title="vector_tie"><tt class="computeroutput"><span class="identifier">vector_tie</span></tt></a><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">),</span> <span class="identifier">sub</span><span class="special">()));</span>
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<span class="special">}</span>
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</pre>
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<a name="fusion.functional.adapters.fused_function_object.see_also"></a><h5>
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<a name="id666490"></a>
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<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.see_also">See
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also</a>
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</h5>
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<div class="itemizedlist"><ul type="disc">
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<li><a href="fused.html" title="fused"><tt class="computeroutput"><span class="identifier">fused</span></tt></a></li>
|
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<li><a href="fused_procedure.html" title="fused_procedure"><tt class="computeroutput"><span class="identifier">fused_procedure</span></tt></a></li>
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<li><a href="../invocation/functions/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="../../support/deduce.html" title="deduce"><tt class="computeroutput"><span class="identifier">deduce</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
|
||
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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</div></td>
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