hash_set::swap
Exchanges the elements of two hash_sets.
void swap(
hash_set& _Right
);
Parameters
- _Right
The argument hash_set providing the elements to be swapped with the target hash_set.
Remarks
The member function invalidates no references, pointers, or iterators that designate elements in the two hash_sets whose elements are being exchanged.
In Visual C++ .NET 2003, members of the <hash_map> and <hash_set> header files are no longer in the std namespace, but rather have been moved into the stdext namespace. See The stdext Namespace for more information.
Example
// hash_set_swap.cpp
// compile with: /EHsc
#include <hash_set>
#include <iostream>
int main( )
{
using namespace std;
using namespace stdext;
hash_set <int> hs1, hs2, hs3;
hash_set <int>::iterator hs1_Iter;
hs1.insert( 10 );
hs1.insert( 20 );
hs1.insert( 30 );
hs2.insert( 100 );
hs2.insert( 200 );
hs3.insert( 300 );
cout << "The original hash_set hs1 is:";
for ( hs1_Iter = hs1.begin( ); hs1_Iter != hs1.end( );
hs1_Iter++ )
cout << " " << *hs1_Iter;
cout << "." << endl;
// This is the member function version of swap
hs1.swap( hs2 );
cout << "After swapping with hs2, list hs1 is:";
for ( hs1_Iter = hs1.begin( ); hs1_Iter != hs1.end( );
hs1_Iter++ )
cout << " " << *hs1_Iter;
cout << "." << endl;
// This is the specialized template version of swap
swap( hs1, hs3 );
cout << "After swapping with hs3, list hs1 is:";
for ( hs1_Iter = hs1.begin( ); hs1_Iter != hs1.end( );
hs1_Iter++ )
cout << " " << *hs1_Iter;
cout << "." << endl;
}
The original hash_set hs1 is: 10 20 30.
After swapping with hs2, list hs1 is: 200 100.
After swapping with hs3, list hs1 is: 300.
Requirements
Header: <hash_set>
Namespace: stdext