检查在源范围的每个元素并替换，则只要满足指定的特性，在复制结果到新的目标范围。
template<class InputIterator, class OutputIterator, class Predicate, class Type>
OutputIterator replace_copy_if(
InputIterator _First,
InputIterator _Last,
OutputIterator _Result,
Predicate _Pred,
const Type& _Val
);
参数
_First
指向第一个元素的位置的输入迭代器在元素中替换的范围。_Last
指向通过最终元素的位置一的输入迭代器在元素中替换的范围。_Result
指向第一个元素的位置的输出器遍历元素复制的目标范围。_Pred
必须满足的一元谓词变为元素的值将被替换。_Val
分配给旧值满足谓词的元素的新值。
返回值
指向通过最终元素的位置个的输出器遍历元素修改后的顺序进行复制的目标范围为。
备注
引用的源和目标范围不能重叠并且必须都是有效的:所有指针必须dereferenceable，并在序列中最后位置以访问按增量。
未替换元素的顺序保持不变。
用于的 operator== 确定在元素相等必须实施在其操作数之间的等效性关系。
复杂的线性;具有(_Last – _First)相等性比较和最多_Last (–) _First新的值的赋值。
replace_copy_if 有两个相关的窗体:
有关这些功能如何的信息的行为，请参见 经过检查的迭代器。
示例
// alg_replace_copy_if.cpp
// compile with: /EHsc
#include <vector>
#include <list>
#include <algorithm>
#include <iostream>
bool greater6 ( int value ) {
return value >6;
}
int main( ) {
using namespace std;
vector <int> v1;
list <int> L1 (13);
vector <int>::iterator Iter1;
list <int>::iterator L_Iter1;
int i;
for ( i = 0 ; i <= 9 ; i++ )
v1.push_back( i );
int ii;
for ( ii = 0 ; ii <= 3 ; ii++ )
v1.push_back( 7 );
random_shuffle ( v1.begin( ), v1.end( ) );
int iii;
for ( iii = 0 ; iii <= 13 ; iii++ )
v1.push_back( 1 );
cout << "The original vector v1 is:\n ( " ;
for ( Iter1 = v1.begin( ) ; Iter1 != v1.end( ) ; Iter1++ )
cout << *Iter1 << " ";
cout << ")." << endl;
// Replace elements with a value of 7 in the 1st half of a vector
// with a value of 70 and copy it into the 2nd half of the vector
replace_copy_if ( v1.begin( ), v1.begin( ) + 14,v1.end( ) -14,
greater6 , 70);
cout << "The vector v1 with values of 70 replacing those greater"
<< "\n than 6 in the 1st half & copied into the 2nd half is:\n ( " ;
for ( Iter1 = v1.begin( ) ; Iter1 != v1.end( ) ; Iter1++ )
cout << *Iter1 << " ";
cout << ")." << endl;
// Replace elements in a vector with a value of 70
// with a value of 1 and copy into a list
replace_copy_if ( v1.begin( ), v1.begin( ) + 13,L1.begin( ),
greater6 , -1 );
cout << "A list copy of vector v1 with the value -1\n replacing "
<< "those greater than 6 is:\n ( " ;
for ( L_Iter1 = L1.begin( ) ; L_Iter1 != L1.end( ) ; L_Iter1++ )
cout << *L_Iter1 << " ";
cout << ")." << endl;
}
示例输出
The original vector v1 is:
( 7 1 9 2 0 7 7 3 4 6 8 5 7 7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ).
The vector v1 with values of 70 replacing those greater
than 6 in the 1st half & copied into the 2nd half is:
( 7 1 9 2 0 7 7 3 4 6 8 5 7 7 70 1 70 2 0 70 70 3 4 6 70 5 70 70 ).
A list copy of vector v1 with the value -1
replacing those greater than 6 is:
( -1 1 -1 2 0 -1 -1 3 4 6 -1 5 -1 ).
要求
标头: <algorithm>
命名空间: std