operator== (hash_multimap)
Tests if the hash_multimap object on the left side of the operator is equal to the hash_multimap object on the right side.
bool operator==(
const hash_multimap <Key, Type, Traits, Allocator>& _Left,
const hash_multimap <Key, Type, Traits, Allocator>& _Right
);
Parameters
_Left
An object of type hash_multimap._Right
An object of type hash_multimap.
Return Value
true if the hash_multimap on the left side of the operator is equal to the hash_multimap on the right side of the operator; otherwise false.
Remarks
The comparison between hash_multimap objects is based on a pairwise comparison of their elements. Two hash_multimaps are equal if they have the same number of elements and their respective elements have the same values. Otherwise, they are unequal.
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_multimap_op_eq.cpp
// compile with: /EHsc
#define _DEFINE_DEPRECATED_HASH_CLASSES 0
#include <hash_map>
#include <iostream>
int main( )
{
using namespace std;
using namespace stdext;
hash_multimap<int, int> hm1, hm2, hm3;
int i;
typedef pair<int, int> Int_Pair;
for (i = 0; i < 3; i++)
{
hm1.insert(Int_Pair(i, i));
hm2.insert(Int_Pair(i, i*i));
hm3.insert(Int_Pair(i, i));
}
if ( hm1 == hm2 )
cout << "The hash_multimaps hm1 and hm2 are equal." << endl;
else
cout << "The hash_multimaps hm1 and hm2 are not equal." << endl;
if ( hm1 == hm3 )
cout << "The hash_multimaps hm1 and hm3 are equal." << endl;
else
cout << "The hash_multimaps hm1 and hm3 are not equal." << endl;
}
The hash_multimaps hm1 and hm2 are not equal. The hash_multimaps hm1 and hm3 are equal.
Requirements
Header: <hash_map>
Namespace: stdext