list::swap
交换两个列表对象的元素。
void swap(
list<Type, Allocator>& _Right
);
friend void swap(
list<Type, Allocator>& _Left,
list<Type, Allocator>& _Right
)
参数
_Right
提供要交换的元素的列表,或其元素将要与列表 _Left 的元素交换的列表。_Left
组件将交换与列表 _Right的列表。
示例
// list_swap.cpp
// compile with: /EHsc
#include <list>
#include <iostream>
int main( )
{
using namespace std;
list <int> c1, c2, c3;
list <int>::iterator c1_Iter;
c1.push_back( 1 );
c1.push_back( 2 );
c1.push_back( 3 );
c2.push_back( 10 );
c2.push_back( 20 );
c3.push_back( 100 );
cout << "The original list c1 is:";
for ( c1_Iter = c1.begin( ); c1_Iter != c1.end( ); c1_Iter++ )
cout << " " << *c1_Iter;
cout << endl;
c1.swap( c2 );
cout << "After swapping with c2, list c1 is:";
for ( c1_Iter = c1.begin( ); c1_Iter != c1.end( ); c1_Iter++ )
cout << " " << *c1_Iter;
cout << endl;
swap( c1,c3 );
cout << "After swapping with c3, list c1 is:";
for ( c1_Iter = c1.begin( ); c1_Iter != c1.end( ); c1_Iter++ )
cout << " " << *c1_Iter;
cout << endl;
}
要求
标头: <列表>
命名空间: std