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| <div class="section" id="pair"> |
| <h1><a class="toc-backref" href="./data-types-miscellaneous.html#id1583">pair</a></h1> |
| <div class="section" id="id1271"> |
| <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> |
| <pre class="literal-block"> |
| template< |
| typename T1 |
| , typename T2 |
| > |
| struct <a href="./pair.html" class="identifier">pair</a> |
| { |
| typedef <a href="./pair.html" class="identifier">pair</a> type; |
| typedef T1 first; |
| typedef T2 second; |
| }; |
| </pre> |
| </div> |
| <div class="section" id="id1272"> |
| <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> |
| <p>A transparent holder for two arbitrary types.</p> |
| </div> |
| <div class="section" id="id1273"> |
| <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> |
| <pre class="literal-block"> |
| #include <<a href="../../../../boost/mpl/pair.hpp" class="header">boost/mpl/pair.hpp</a>> |
| </pre> |
| </div> |
| <div class="section" id="id1274"> |
| <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> |
| <p>Count a number of elements in the sequence together with a number of negative |
| elements among these.</p> |
| <pre class="literal-block"> |
| typedef <a href="./fold.html" class="identifier">fold</a>< |
| <a href="./vector-c.html" class="identifier">vector_c</a><int,-1,0,5,-7,-2,4,5,7> |
| , <a href="./pair.html" class="identifier">pair</a>< <a href="./int.html" class="identifier">int_</a><0>, <a href="./int.html" class="identifier">int_</a><0> > |
| , <a href="./pair.html" class="identifier">pair</a>< |
| <a href="./next.html" class="identifier">next</a>< first<<a href="./placeholders.html" class="identifier">_1</a>> > |
| , <a href="./if.html" class="identifier">if_</a>< |
| <a href="./less.html" class="identifier">less</a>< <a href="./placeholders.html" class="identifier">_2</a>, <a href="./int.html" class="identifier">int_</a><0> > |
| , <a href="./next.html" class="identifier">next</a>< second<<a href="./placeholders.html" class="identifier">_1</a>> > |
| , second<<a href="./placeholders.html" class="identifier">_1</a>> |
| > |
| > |
| >::type p; |
| |
| <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( p::first::value, ==, 8 ); |
| <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( p::second::value, ==, 3 ); |
| </pre> |
| </div> |
| <div class="section" id="id1275"> |
| <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> |
| <p><a class="reference internal" href="./data-types.html">Data Types</a>, <a class="reference internal" href="./sequences.html">Sequences</a>, <a class="reference internal" href="./trivial-metafunctions-summary.html#first">first</a>, <a class="reference internal" href="./trivial-metafunctions-summary.html#second">second</a></p> |
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| <td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div> |
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