📄 remove.html
字号:
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Author" CONTENT="Zafir Anjum">
<TITLE>MFC Programmer's SourceBook : STL Programmer's Guide</TITLE>
<META name="description"
content="A freely available implementation
of the C++ Standard Template Library, including
hypertext documentation.">
<META name="keywords"
content="generic programming, STL, standard template library">
</HEAD>
<SCRIPT LANGUAGE="JavaScript"><!--
var adcategory = "cpp";
// -->
</SCRIPT>
<body background="../../fancyhome/back.gif" bgcolor="#FFFFFF" >
<SCRIPT LANGUAGE="JavaScript"><!--
var nfrm = location.href.indexOf("_nfrm_");
var validframes = (top.frames.length > 0 && top.frames['ad'] && top.frames['logo'] );
var random = Math.random();
if( !validframes && nfrm == -1 )
{
var dclkPage = "www.codeguru.com/";
if( self.adcategory )
dclkPage += adcategory;
else
dclkPage += "mfc";
document.write('<nolayer><center>');
document.write('<iframe src="http://ad.doubleclick.net/adi/' + dclkPage + ';ord='
+ random + '" width=470 height=62 marginwidth=0 marginheight=0 hspace=0 vspace=0 '
+ 'frameborder=0 scrolling=no bordercolor="#000000">');
document.write('<a href="http://ad.doubleclick.net/jump/' + dclkPage + ';ord='
+ random + '">');
document.write('<img src="http://ad.doubleclick.net/ad/' + dclkPage + ';ord='
+ random + '" height=60 width=468>' + '</a>');
document.write('</iframe>');
document.write('</center></nolayer>');
document.write('<layer src="http://ad.doubleclick.net/adl/' + dclkPage +
';ord=' + random + '"></layer>');
document.write('<ilayer visibility=hide width=468 height=83></ilayer>');
}
// top.location = "/show.cgi?" + adcategory + "=" + location.pathname;
// -->
</SCRIPT>
<noscript>
<p align="center">
<a href="http://ad.doubleclick.net/jump/www.codeguru.com/cpp;ord=Nupa@NFCY34AAHhmowM">
<img src="http://ad.doubleclick.net/ad/www.codeguru.com/cpp;ord=Nupa@NFCY34AAHhmowM"></a>
</p>
</noscript>
<BR Clear>
<H1>remove</H1>
<Table CellPadding=0 CellSpacing=0 width=100%>
<TR>
<TD Align=left><Img src = "algorithms.gif" Alt="" WIDTH = "194" HEIGHT = "38" ></TD>
<TD Align=right><Img src = "function.gif" Alt="" WIDTH = "194" HEIGHT = "38" ></TD>
</TR>
<TR>
<TD Align=left VAlign=top><b>Category</b>: algorithms</TD>
<TD Align=right VAlign=top><b>Component type</b>: function</TD>
</TR>
</Table>
<h3>Prototype</h3>
<pre>
template <class <A href="ForwardIterator.html">ForwardIterator</A>, class T>
ForwardIterator remove(ForwardIterator first, ForwardIterator last,
const T& value);
</pre>
<h3>Description</h3>
<tt>Remove</tt> removes from the range <tt>[first, last)</tt> all elements that
are equal to <tt>value</tt>. That is, <tt>remove</tt> returns an iterator
<tt>new_last</tt> such that the range <tt>[first, new_last)</tt> contains no
elements equal to <tt>value</tt>. <A href="#1">[1]</A> The iterators in the range
<tt>[new_last, last)</tt> are all still dereferenceable, but the elements
that they point to are unspecified. <tt>Remove</tt> is stable, meaning
that the relative order of elements that are not equal to
<tt>value</tt> is unchanged.
<h3>Definition</h3>
Defined in <A href="algo.h">algo.h</A>.
<h3>Requirements on types</h3>
<UL>
<LI>
<tt>ForwardIterator</tt> is a model of <A href="ForwardIterator.html">Forward Iterator</A>.
<LI>
<tt>ForwardIterator</tt> is mutable.
<LI>
<tt>T</tt> is a model of <A href="EqualityComparable.html">Equality Comparable</A>.
<LI>
Objects of type <tt>T</tt> can be compared for equality with objects
of <tt>ForwardIterator</tt>'s value type.
</UL>
<h3>Preconditions</h3>
<UL>
<LI>
<tt>[first, last)</tt> is a valid range.
</UL>
<h3>Complexity</h3>
Linear. <tt>Remove</tt> performs exactly <tt>last - first</tt> comparisons for equality.
<h3>Example</h3>
<pre>
<A href="Vector.html">vector</A><int> V;
V.push_back(3);
V.push_back(1);
V.push_back(4);
V.push_back(1);
V.push_back(5);
V.push_back(9);
<A href="copy.html">copy</A>(V.begin(), V.end(), <A href="ostream_iterator.html" tppabs="http://www.sgi.com/Technology/STL/ostream_iterator.shtml">ostream_iterator</A><int>(cout, " "));
// The output is "3 1 4 1 5 9".
vector<int>::iterator new_end = remove(V.begin(), V.end(), 1);
<A href="copy.html">copy</A>(V.begin(), new_end, <A href="ostream_iterator.html" tppabs="http://www.sgi.com/Technology/STL/ostream_iterator.shtml">ostream_iterator</A><int>(cout, " "));
// The output is "3 4 5 9".
</pre>
<h3>Notes</h3>
<P><A name="1">[1]</A>
The meaning of "removal" is somewhat subtle. <tt>Remove</tt>
does not destroy any iterators, and does not change the distance
between <tt>first</tt> and <tt>last</tt>. (There's no way that it could do anything
of the sort.) So, for example, if <tt>V</tt> is a <A href="Vector.html">vector</A>,
<tt>remove(V.begin(), V.end(), 0)</tt> does not change <tt>V.size()</tt>: <tt>V</tt> will
contain just as many elements as it did before. <tt>Remove</tt> returns an
iterator that points to the end of the resulting range after elements
have been removed from it; it follows that the elements after that
iterator are of no interest, and may be discarded. If you are
removing elements from a <A href="Sequence.html">Sequence</A>, you may simply erase them.
That is, a reasonable way of removing elements from a <A href="Sequence.html">Sequence</A>
is <tt>S.erase(remove(S.begin(), S.end(), x), S.end())</tt>.
<h3>See also</h3>
<tt><A href="remove_if.html">remove_if</A></tt>, <tt><A href="remove_copy.html" tppabs="http://www.sgi.com/Technology/STL/remove_copy.shtml">remove_copy</A></tt>, <tt><A href="remove_copy_if.html" tppabs="http://www.sgi.com/Technology/STL/remove_copy_if.shtml">remove_copy_if</A></tt>,
<tt><A href="unique.html">unique</A></tt>, <tt><A href="unique_copy.html" tppabs="http://www.sgi.com/Technology/STL/unique_copy.shtml">unique_copy</A></tt>.
<HR SIZE="6"> <FONT SIZE="-2"> Copyright © 1996 Silicon Graphics, Inc.
<HR>
<TABLE BORDER=0 WIDTH="100%" >
<TR>
<TD WIDTH="33%"><FONT SIZE=-1><A HREF="index.html" >
STL</A></FONT></TD>
<TD WIDTH="33%">
<CENTER><FONT SIZE=-2>© Copyright 1997-1998 CodeGuru</FONT> </CENTER>
</TD>
<TD WIDTH="34%">
<DIV ALIGN=right><FONT SIZE=-1>Contact : <A HREF="mailto:webmaster@codeguru.com">webmaster@codeguru.com</A> </FONT></DIV>
</TD>
</TR>
</TABLE>
<SCRIPT LANGUAGE="JavaScript" ><!--
var adurl = "/cgi-bin/doubleclick.cgi?";
if( self.adcategory )
adurl += adcategory;
else
adurl += "mfc";
if( self.parent.norefreshad )
parent.norefreshad = false;
else if( validframes )
parent.frames['ad'].location = adurl;
if( !validframes && nfrm == -1)
{
var dclkPage = "www.codeguru.com/";
if( self.adcategory )
dclkPage += adcategory;
else
dclkPage += "mfc";
// var random = Math.random();
document.write('<nolayer><center>');
document.write('<iframe src="http://ad.doubleclick.net/adi/' + dclkPage + ';ord='
+ random + '" width=470 height=62 marginwidth=0 marginheight=0 hspace=0 vspace=0 '
+ 'frameborder=0 scrolling=no bordercolor="#000000">');
document.write('<a href="http://ad.doubleclick.net/jump/' + dclkPage + ';ord='
+ random + '">');
document.write('<img src="http://ad.doubleclick.net/ad/' + dclkPage + ';ord='
+ random + '" height=60 width=468>' + '</a>');
document.write('</iframe>');
document.write('</center></nolayer>');
document.write('<layer src="http://ad.doubleclick.net/adl/' + dclkPage +
';ord=' + random + '"></layer>');
document.write('<ilayer visibility=hide width=468 height=83></ilayer>');
}
// -->
</SCRIPT>
<!-- SCRIPT LANGUAGE="JavaScript" SRC="/global/fscript.js">
//
</SCRIPT -->
<noscript>
<p align="center">
<a href="http://ad.doubleclick.net/jump/www.codeguru.com/cpp;ord=Nupa@NFCY34AAHhmowM">
<img src="http://ad.doubleclick.net/ad/www.codeguru.com/cpp;ord=Nupa@NFCY34AAHhmowM"></a>
</p>
</noscript>
</BODY>
</HTML>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -