operator== (<memory>)
Tests for equality between allocator objects of a specified class.
template<class Type, class Other>
bool operator==(
const allocator<Type>& _Left,
const allocator<Other>& _Right
);
Parameters
_Left
One of the allocator objects to be tested for equality._Right
One of the allocator objects to be tested for equality.
Return Value
true if the allocator objects are equal; false if allocator objects are not equal.
Remarks
Two allocator objects should compare equal only if an object allocated through one can be deallocated through the other. If the value of one object is determined from another by assignment or by construction, the two objects should compare equal.
Example
// memory_op_eq.cpp
// compile with: /EHsc
#include <memory>
#include <iostream>
#include <vector>
using namespace std;
int main( )
{
allocator<char> Alloc;
vector <int>:: allocator_type v1Alloc;
allocator<char> cAlloc(Alloc);
allocator<int> cv1Alloc(v1Alloc);
if ( cv1Alloc == v1Alloc )
cout << "The allocator objects cv1Alloc & v1Alloc are equal."
<< endl;
else
cout << "The allocator objects cv1Alloc & v1Alloc are not equal."
<< endl;
if ( cAlloc == Alloc )
cout << "The allocator objects cAlloc & Alloc are equal."
<< endl;
else
cout << "The allocator objects cAlloc & Alloc are not equal."
<< endl;
}
The allocator objects cv1Alloc & v1Alloc are equal. The allocator objects cAlloc & Alloc are equal.
Requirements
Header: <memory>
Namespace: std