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| <div class="section" id="unpack-args"> |
| <h1><a class="toc-backref" href="./invocation.html#id1527">unpack_args</a></h1> |
| <div class="section" id="id901"> |
| <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> |
| <pre class="literal-block"> |
| template< |
| typename F |
| > |
| struct <a href="./unpack-args.html" class="identifier">unpack_args</a> |
| { |
| // <em>unspecified</em> |
| // <em>...</em> |
| }; |
| </pre> |
| </div> |
| <div class="section" id="id902"> |
| <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> |
| <p>A higher-order primitive transforming an <em>n</em>-ary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">F</span></tt> into |
| an unary <a class="reference internal" href="./metafunction-class.html">Metafunction Class</a> <tt class="literal"><span class="pre">g</span></tt> accepting a single sequence of <em>n</em> arguments.</p> |
| </div> |
| <div class="section" id="id903"> |
| <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> |
| <pre class="literal-block"> |
| #include <<a href="../../../../boost/mpl/unpack_args.hpp" class="header">boost/mpl/unpack_args.hpp</a>> |
| </pre> |
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| <div class="section" id="id904"> |
| <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> |
| <p><a class="reference internal" href="./metafunction-class.html">Metafunction Class</a></p> |
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| <div class="section" id="id905"> |
| <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> |
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| <tr><th class="head">Parameter</th> |
| <th class="head">Requirement</th> |
| <th class="head">Description</th> |
| </tr> |
| </thead> |
| <tbody valign="top"> |
| <tr><td><tt class="literal"><span class="pre">F</span></tt></td> |
| <td><a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td> |
| <td>A lambda expression to adopt.</td> |
| </tr> |
| </tbody> |
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| </div> |
| <div class="section" id="id906"> |
| <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> |
| <p>For an arbitrary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">f</span></tt>, and arbitrary types <tt class="literal"><span class="pre">a1</span></tt>,... <tt class="literal"><span class="pre">an</span></tt>:</p> |
| <pre class="literal-block"> |
| typedef <a href="./unpack-args.html" class="identifier">unpack_args</a><f> g; |
| </pre> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference internal" href="./metafunction-class.html">Metafunction Class</a>.</p> |
| </td> |
| </tr> |
| <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first"><tt class="literal"><span class="pre">g</span></tt> is a unary <a class="reference internal" href="./metafunction-class.html">Metafunction Class</a> such that</p> |
| <pre class="literal-block"> |
| <a href="./apply-wrap.html" class="identifier">apply_wrap</a><em>n</em>< g, <a href="./vector.html" class="identifier">vector</a><a1,<em>...</em>a<em>n</em>> >::type |
| </pre> |
| <p>is identical to</p> |
| <pre class="last literal-block"> |
| <a href="./apply.html" class="identifier">apply</a><F,a1,<em>...</em>a<em>n</em>>::type |
| </pre> |
| </td> |
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| </table> |
| </div> |
| <div class="section" id="id907"> |
| <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> |
| <pre class="literal-block"> |
| <a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./apply.html" class="identifier">apply</a>< |
| <a href="./unpack-args.html" class="identifier">unpack_args</a>< is_same<<a href="./placeholders.html" class="identifier">_1</a>,<a href="./placeholders.html" class="identifier">_2</a>> > |
| , <a href="./vector.html" class="identifier">vector</a><int,int> |
| > )); |
| </pre> |
| </div> |
| <div class="section" id="id908"> |
| <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> |
| <p><a class="reference internal" href="./metafunctions.html">Metafunctions</a>, <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a>, <a class="reference internal" href="./metafunction-class.html">Metafunction Class</a>, <a class="reference internal" href="./apply.html">apply</a>, <a class="reference internal" href="./apply-wrap.html">apply_wrap</a>, <a class="reference internal" href="./bind.html">bind</a></p> |
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