📄 remove_copy_if.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-9FCY34AAHlCQb4">
<img src="http://ad.doubleclick.net/ad/www.codeguru.com/cpp;ord=Nupa-9FCY34AAHlCQb4"></a>
</p>
</noscript>
<BR Clear>
<H1>remove_copy_if</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="InputIterator.html">InputIterator</A>, class <A href="OutputIterator.html" tppabs="http://www.sgi.com/Technology/STL/OutputIterator.shtml">OutputIterator</A>, class <A href="Predicate.html" tppabs="http://www.sgi.com/Technology/STL/Predicate.shtml">Predicate</A>>
OutputIterator remove_copy_if(InputIterator first, InputIterator last,
OutputIterator result, Predicate pred);
</pre>
<h3>Description</h3>
<tt>Remove_copy_if</tt> copies elements from the range <tt>[first, last)</tt> to a
range beginning at <tt>result</tt>, except that elements for which <tt>pred</tt>
is <tt>true</tt> are not copied. The return
value is the end of the resulting range. This operation is stable,
meaning that the relative order of the elements that are copied is the same
as in the range <tt>[first, last)</tt>.
<h3>Definition</h3>
Defined in <A href="algo.h">algo.h</A>.
<h3>Requirements on types</h3>
<UL>
<LI>
<tt>InputIterator</tt> is a model of <A href="InputIterator.html">Input Iterator</A>.
<LI>
<tt>OutputIterator</tt> is a model of <A href="OutputIterator.html">Output Iterator</A>.
<LI>
<tt>InputIterator</tt>'s value type is convertible to a type in
<tt>OutputIterator</tt>'s set of value types.
<LI>
<tt>Predicate</tt> is a model of <A href="Predicate.html">Predicate</A>.
<LI>
<tt>InputIterator</tt>'s value type is convertible to <tt>Predicate</tt>'s argument
type.
</UL>
<h3>Preconditions</h3>
<UL>
<LI>
<tt>[first, last)</tt> is a valid range.
<LI>
There is enough space in the output range to store the copied
values. That is, if there are <tt>n</tt> elements in <tt>[first, last)</tt>
that do not satisfy <tt>pred</tt>, then <tt>[result, result+n)</tt> is
a valid range.
<LI>
<tt>result</tt> is not an iterator in the range <tt>[first, last)</tt>.
</UL>
<h3>Complexity</h3>
Linear. Exactly <tt>last - first</tt> applications of <tt>pred</tt>, and at most
<tt>last - first</tt> assignments.
<h3>Example</h3>
Fill a vector with the nonnegative elements of another vector.
<pre>
<A href="Vector.html">vector</A><int> V1;
V.push_back(-2);
V.push_back(0);
V.push_back(-1);
V.push_back(0);
V.push_back(1);
V.push_back(2);
<A href="Vector.html">vector</A><int> V2;
remove_copy_if(V1.begin(), V1.end(),
<A href="back_insert_iterator.html">back_inserter</A>(V2),
<A href="binder2nd.html">bind2nd</A>(<A href="less.html" tppabs="http://www.sgi.com/Technology/STL/less.shtml">less</A><int>(), 0));
</pre>
<h3>Notes</h3>
<h3>See also</h3>
<tt><A href="copy.html">copy</A></tt>, <tt><A href="remove.html" tppabs="http://www.sgi.com/Technology/STL/remove.shtml">remove</A></tt>, <tt><A href="remove_if.html" tppabs="http://www.sgi.com/Technology/STL/remove_if.shtml">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="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-9FCY34AAHlCQb4">
<img src="http://ad.doubleclick.net/ad/www.codeguru.com/cpp;ord=Nupa-9FCY34AAHlCQb4"></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 + -