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7 <title>The MPL Reference Manual: is_sequence
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13 </tr></table><div class=
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14 <div class=
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"is-sequence">
15 <h1><a class=
"toc-backref" href=
"./intrinsic-metafunctions.html#id1438">is_sequence
</a></h1>
16 <div class=
"section" id=
"id292">
17 <h3><a class=
"subsection-title" href=
"#synopsis" name=
"synopsis">Synopsis
</a></h3>
18 <pre class=
"literal-block">
22 struct
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>
24 typedef
<em>unspecified
</em> type;
28 <div class=
"section" id=
"id293">
29 <h3><a class=
"subsection-title" href=
"#description" name=
"description">Description
</a></h3>
30 <p>Returns a boolean
<a class=
"reference internal" href=
"./integral-constant.html">Integral Constant
</a> <tt class=
"literal"><span class=
"pre">c
</span></tt> such that
<tt class=
"literal"><span class=
"pre">c::value
</span> <span class=
"pre">==
</span> <span class=
"pre">true
</span></tt> if and
31 only if
<tt class=
"literal"><span class=
"pre">X
</span></tt> is a model of
<a class=
"reference internal" href=
"./forward-sequence.html">Forward Sequence
</a>.
</p>
33 <div class=
"section" id=
"id294">
34 <h3><a class=
"subsection-title" href=
"#header" name=
"header">Header
</a></h3>
35 <pre class=
"literal-block">
36 #include
<<a href=
"../../../../boost/mpl/is_sequence.hpp" class=
"header">boost/mpl/is_sequence.hpp
</a>>
39 <div class=
"section" id=
"id295">
40 <h3><a class=
"subsection-title" href=
"#parameters" name=
"parameters">Parameters
</a></h3>
41 <table border=
"1" class=
"docutils table">
47 <thead valign=
"bottom">
48 <tr><th class=
"head">Parameter
</th>
49 <th class=
"head">Requirement
</th>
50 <th class=
"head">Description
</th>
54 <tr><td><tt class=
"literal"><span class=
"pre">X
</span></tt></td>
56 <td>The type to query.
</td>
61 <div class=
"section" id=
"id296">
62 <h3><a class=
"subsection-title" href=
"#expression-semantics" name=
"expression-semantics">Expression semantics
</a></h3>
63 <pre class=
"literal-block">
64 typedef
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a><X
>::type c;
66 <table class=
"docutils field-list" frame=
"void" rules=
"none">
67 <col class=
"field-name" />
68 <col class=
"field-body" />
70 <tr class=
"field"><th class=
"field-name">Return type:
</th><td class=
"field-body"><p class=
"first">Boolean
<a class=
"reference internal" href=
"./integral-constant.html">Integral Constant
</a>.
</p>
73 <tr class=
"field"><th class=
"field-name">Semantics:
</th><td class=
"field-body"><p class=
"first">Equivalent to
</p>
74 <pre class=
"last literal-block">
75 typedef
<a href=
"./not.html" class=
"identifier">not_
</a>< is_same
< <a href=
"./begin.html" class=
"identifier">begin
</a><T
>::type,
<a href=
"./void.html" class=
"identifier">void_
</a> > >::type c;
82 <div class=
"section" id=
"id297">
83 <h3><a class=
"subsection-title" href=
"#complexity" name=
"complexity">Complexity
</a></h3>
84 <p>Amortized constant time.
</p>
86 <div class=
"section" id=
"id298">
87 <h3><a class=
"subsection-title" href=
"#example" name=
"example">Example
</a></h3>
88 <pre class=
"literal-block">
91 <a href=
"./assert-not.html" class=
"identifier">BOOST_MPL_ASSERT_NOT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< std::
<a href=
"./vector.html" class=
"identifier">vector
</a><int
> > ));
92 <a href=
"./assert-not.html" class=
"identifier">BOOST_MPL_ASSERT_NOT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< int
> ));
93 <a href=
"./assert-not.html" class=
"identifier">BOOST_MPL_ASSERT_NOT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< int
& > ));
94 <a href=
"./assert-not.html" class=
"identifier">BOOST_MPL_ASSERT_NOT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< UDT
> ));
95 <a href=
"./assert-not.html" class=
"identifier">BOOST_MPL_ASSERT_NOT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< UDT*
> ));
96 <a href=
"./assert.html" class=
"identifier">BOOST_MPL_ASSERT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< <a href=
"./range-c.html" class=
"identifier">range_c
</a><int,
0,
0> > ));
97 <a href=
"./assert.html" class=
"identifier">BOOST_MPL_ASSERT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< <a href=
"./list.html" class=
"identifier">list
</a><> > ));
98 <a href=
"./assert.html" class=
"identifier">BOOST_MPL_ASSERT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< <a href=
"./list.html" class=
"identifier">list
</a><int
> > ));
99 <a href=
"./assert.html" class=
"identifier">BOOST_MPL_ASSERT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< <a href=
"./vector.html" class=
"identifier">vector
</a><> > ));
100 <a href=
"./assert.html" class=
"identifier">BOOST_MPL_ASSERT
</a>((
<a href=
"./is-sequence.html" class=
"identifier">is_sequence
</a>< <a href=
"./vector.html" class=
"identifier">vector
</a><int
> > ));
103 <div class=
"section" id=
"id299">
104 <h3><a class=
"subsection-title" href=
"#see-also" name=
"see-also">See also
</a></h3>
105 <p><a class=
"reference internal" href=
"./forward-sequence.html">Forward Sequence
</a>,
<a class=
"reference internal" href=
"./begin.html">begin
</a>,
<a class=
"reference internal" href=
"./end.html">end
</a>,
<a class=
"reference internal" href=
"./vector.html">vector
</a>,
<a class=
"reference internal" href=
"./list.html">list
</a>,
<a class=
"reference internal" href=
"./range-c.html">range_c
</a></p>
106 <!-- Sequences/Intrinsic Metafunctions//key_type -->
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112 <td><div class=
"copyright-footer"><div class=
"copyright">Copyright ©
2001-
2009 Aleksey Gurtovoy and David Abrahams
</div>
113 Distributed under the Boost Software License, Version
1.0. (See accompanying
114 file LICENSE_1_0.txt or copy at
<a class=
"reference external" href=
"http://www.boost.org/LICENSE_1_0.txt" target=
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