1 <?xml version=
"1.0" encoding=
"utf-8" ?>
2 <!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
3 <html xmlns=
"http://www.w3.org/1999/xhtml" xml:
lang=
"en" lang=
"en">
5 <meta http-equiv=
"Content-Type" content=
"text/html; charset=utf-8" />
6 <meta name=
"generator" content=
"Docutils 0.7: http://docutils.sourceforge.net/" />
7 <title>The MPL Reference Manual: erase_key
</title>
8 <link rel=
"stylesheet" href=
"../style.css" type=
"text/css" />
10 <body class=
"docframe refmanual">
11 <table class=
"header"><tr class=
"header"><td class=
"header-group navigation-bar"><span class=
"navigation-group"><a href=
"./erase.html" class=
"navigation-link">Prev
</a> <a href=
"./front.html" class=
"navigation-link">Next
</a></span><span class=
"navigation-group-separator"> |
</span><span class=
"navigation-group"><a href=
"./erase.html" class=
"navigation-link">Back
</a> <a href=
"./front.html" class=
"navigation-link">Along
</a></span><span class=
"navigation-group-separator"> |
</span><span class=
"navigation-group"><a href=
"./intrinsic-metafunctions.html" class=
"navigation-link">Up
</a> <a href=
"../refmanual.html" class=
"navigation-link">Home
</a></span><span class=
"navigation-group-separator"> |
</span><span class=
"navigation-group"><a href=
"./refmanual_toc.html" class=
"navigation-link">Full TOC
</a></span></td>
12 <td class=
"header-group page-location"><a href=
"../refmanual.html" class=
"navigation-link">Front Page
</a> /
<a href=
"./sequences.html" class=
"navigation-link">Sequences
</a> /
<a href=
"./intrinsic-metafunctions.html" class=
"navigation-link">Intrinsic Metafunctions
</a> /
<a href=
"./erase-key.html" class=
"navigation-link">erase_key
</a></td>
13 </tr></table><div class=
"header-separator"></div>
14 <div class=
"section" id=
"erase-key">
15 <h1><a class=
"toc-backref" href=
"./intrinsic-metafunctions.html#id1433">erase_key
</a></h1>
16 <div class=
"section" id=
"id247">
17 <h3><a class=
"subsection-title" href=
"#synopsis" name=
"synopsis">Synopsis
</a></h3>
18 <pre class=
"literal-block">
23 struct
<a href=
"./erase-key.html" class=
"identifier">erase_key
</a>
25 typedef
<em>unspecified
</em> type;
29 <div class=
"section" id=
"id248">
30 <h3><a class=
"subsection-title" href=
"#description" name=
"description">Description
</a></h3>
31 <p>Erases elements associated with the key
<tt class=
"literal"><span class=
"pre">Key
</span></tt> in the
<a class=
"reference internal" href=
"./extensible-associative-sequence.html">Extensible Associative Sequence
</a>
32 <tt class=
"literal"><span class=
"pre">AssocSeq
</span></tt> .
</p>
34 <div class=
"section" id=
"id249">
35 <h3><a class=
"subsection-title" href=
"#header" name=
"header">Header
</a></h3>
36 <pre class=
"literal-block">
37 #include
<<a href=
"../../../../boost/mpl/erase_key.hpp" class=
"header">boost/mpl/erase_key.hpp
</a>>
40 <div class=
"section" id=
"id250">
41 <h3><a class=
"subsection-title" href=
"#model-of" name=
"model-of">Model of
</a></h3>
42 <p><a class=
"reference internal" href=
"./tag-dispatched-metafunction.html">Tag Dispatched Metafunction
</a></p>
44 <div class=
"section" id=
"id251">
45 <h3><a class=
"subsection-title" href=
"#parameters" name=
"parameters">Parameters
</a></h3>
46 <table border=
"1" class=
"docutils table">
52 <thead valign=
"bottom">
53 <tr><th class=
"head">Parameter
</th>
54 <th class=
"head">Requirement
</th>
55 <th class=
"head">Description
</th>
59 <tr><td><tt class=
"literal"><span class=
"pre">AssocSeq
</span></tt></td>
60 <td><a class=
"reference internal" href=
"./extensible-associative-sequence.html">Extensible Associative Sequence
</a></td>
61 <td>A sequence to erase elements from.
</td>
63 <tr><td><tt class=
"literal"><span class=
"pre">Key
</span></tt></td>
65 <td>A key for the elements to be removed.
</td>
70 <div class=
"section" id=
"id252">
71 <h3><a class=
"subsection-title" href=
"#expression-semantics" name=
"expression-semantics">Expression semantics
</a></h3>
72 <p>For any
<a class=
"reference internal" href=
"./extensible-associative-sequence.html">Extensible Associative Sequence
</a> <tt class=
"literal"><span class=
"pre">s
</span></tt>, and arbitrary type
<tt class=
"literal"><span class=
"pre">key
</span></tt>:
</p>
73 <pre class=
"literal-block">
74 typedef
<a href=
"./erase-key.html" class=
"identifier">erase_key
</a><s,key
>::type r;
76 <table class=
"docutils field-list" frame=
"void" rules=
"none">
77 <col class=
"field-name" />
78 <col class=
"field-body" />
80 <tr class=
"field"><th class=
"field-name">Return type:
</th><td class=
"field-body"><a class=
"reference internal" href=
"./extensible-associative-sequence.html">Extensible Associative Sequence
</a>.
</td>
82 <tr class=
"field"><th class=
"field-name">Semantics:
</th><td class=
"field-body"><tt class=
"literal"><span class=
"pre">r
</span></tt> is
<a class=
"reference internal" href=
"./terminology.html#concept-identical">concept-identical
</a> and equivalent to
<tt class=
"literal"><span class=
"pre">s
</span></tt> except that
83 <tt class=
"literal"><span class=
"pre"><a href=
"./has-key.html" class=
"identifier">has_key
</a><r,k
>::value
</span> <span class=
"pre">==
</span> <span class=
"pre">false
</span></tt>.
</td>
85 <tr class=
"field"><th class=
"field-name">Postcondition:
</th><td class=
"field-body"><tt class=
"literal"><span class=
"pre"><a href=
"./size.html" class=
"identifier">size
</a><r
>::value
</span> <span class=
"pre">==
</span> <span class=
"pre"><a href=
"./size.html" class=
"identifier">size
</a><s
>::value
</span> <span class=
"pre">-
</span> <span class=
"pre">1</span></tt>.
</td>
90 <div class=
"section" id=
"id253">
91 <h3><a class=
"subsection-title" href=
"#complexity" name=
"complexity">Complexity
</a></h3>
92 <p>Amortized constant time.
</p>
94 <div class=
"section" id=
"id254">
95 <h3><a class=
"subsection-title" href=
"#example" name=
"example">Example
</a></h3>
96 <pre class=
"literal-block">
97 typedef
<a href=
"./map.html" class=
"identifier">map
</a>< <a href=
"./pair.html" class=
"identifier">pair
</a><int,unsigned
>,
<a href=
"./pair.html" class=
"identifier">pair
</a><char,long
> > m;
98 typedef
<a href=
"./erase-key.html" class=
"identifier">erase_key
</a><m,char
>::type m1;
100 <a href=
"./assert-relation.html" class=
"identifier">BOOST_MPL_ASSERT_RELATION
</a>(
<a href=
"./size.html" class=
"identifier">size
</a><m1
>::type::value, ==,
1 );
101 <a href=
"./assert.html" class=
"identifier">BOOST_MPL_ASSERT
</a>(( is_same
< <a href=
"./at.html" class=
"identifier">at
</a><m1,char
>::type,
<a href=
"./void.html" class=
"identifier">void_
</a> > ));
102 <a href=
"./assert.html" class=
"identifier">BOOST_MPL_ASSERT
</a>(( is_same
< <a href=
"./at.html" class=
"identifier">at
</a><m1,int
>::type,unsigned
> ));
105 <div class=
"section" id=
"id255">
106 <h3><a class=
"subsection-title" href=
"#see-also" name=
"see-also">See also
</a></h3>
107 <p><a class=
"reference internal" href=
"./extensible-associative-sequence.html">Extensible Associative Sequence
</a>,
<a class=
"reference internal" href=
"./erase.html">erase
</a>,
<a class=
"reference internal" href=
"./has-key.html">has_key
</a>,
<a class=
"reference internal" href=
"./insert.html">insert
</a></p>
108 <!-- Sequences/Intrinsic Metafunctions//front -->
112 <div class=
"footer-separator"></div>
113 <table class=
"footer"><tr class=
"footer"><td class=
"header-group navigation-bar"><span class=
"navigation-group"><a href=
"./erase.html" class=
"navigation-link">Prev
</a> <a href=
"./front.html" class=
"navigation-link">Next
</a></span><span class=
"navigation-group-separator"> |
</span><span class=
"navigation-group"><a href=
"./erase.html" class=
"navigation-link">Back
</a> <a href=
"./front.html" class=
"navigation-link">Along
</a></span><span class=
"navigation-group-separator"> |
</span><span class=
"navigation-group"><a href=
"./intrinsic-metafunctions.html" class=
"navigation-link">Up
</a> <a href=
"../refmanual.html" class=
"navigation-link">Home
</a></span><span class=
"navigation-group-separator"> |
</span><span class=
"navigation-group"><a href=
"./refmanual_toc.html" class=
"navigation-link">Full TOC
</a></span></td>
114 <td><div class=
"copyright-footer"><div class=
"copyright">Copyright ©
2001-
2009 Aleksey Gurtovoy and David Abrahams
</div>
115 Distributed under the Boost Software License, Version
1.0. (See accompanying
116 file LICENSE_1_0.txt or copy at
<a class=
"reference external" href=
"http://www.boost.org/LICENSE_1_0.txt" target=
"_top">http://www.boost.org/LICENSE_1_0.txt
</a>)
</div></td></tr></table></body>