set::swap

交换元素的两组。

void swap(
   set<Key, Traits, Allocator>& _Right
);

参数

• _Right
  参数设置提供要交换的元素时设置的目标。

备注

函数无效的情况成员引用，这两个指定的元素设置的指针或迭代器其元素交换。

示例

// set_swap.cpp
// compile with: /EHsc
#include <set>
#include <iostream>

int main( )
{
   using namespace std;
   set <int> s1, s2, s3;
   set <int>::iterator s1_Iter;

   s1.insert( 10 );
   s1.insert( 20 );
   s1.insert( 30 );
   s2.insert( 100 );
   s2.insert( 200 );
   s3.insert( 300 );

   cout << "The original set s1 is:";
   for ( s1_Iter = s1.begin( ); s1_Iter != s1.end( ); s1_Iter++ )
      cout << " " << *s1_Iter;
   cout   << "." << endl;

   // This is the member function version of swap
   s1.swap( s2 );

   cout << "After swapping with s2, list s1 is:";
   for ( s1_Iter = s1.begin( ); s1_Iter != s1.end( ); s1_Iter++ )
      cout << " " << *s1_Iter;
   cout  << "." << endl;

   // This is the specialized template version of swap
   swap( s1, s3 );

   cout << "After swapping with s3, list s1 is:";
   for ( s1_Iter = s1.begin( ); s1_Iter != s1.end( ); s1_Iter++ )
      cout << " " << *s1_Iter;
   cout   << "." << endl;
}

要求

标头: <set>

命名空间: std

请参见

参考

set Class

set::swap, set::begin, 和 set::end

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