operator==,!=(std::allocator)

	(1)
template< class T1, class T2 > bool operator==( const allocator<T1>& lhs, const allocator<T2>& rhs ) throw();			(until C++11)
template< class T1, class T2 > bool operator==( const allocator<T1>& lhs, const allocator<T2>& rhs ) noexcept;			(since C++11) (until C++20)
template< class T1, class T2 > constexpr bool operator==( const allocator<T1>& lhs, const allocator<T2>& rhs ) noexcept;			(since C++20)
		(2)
template< class T1, class T2 > bool operator!=( const allocator<T1>& lhs, const allocator<T2>& rhs ) throw();				(until C++11)
template< class T1, class T2 > bool operator!=( const allocator<T1>& lhs, const allocator<T2>& rhs ) noexcept;				(since C++11) (until C++20)

Compares two default allocators. Since default allocators are stateless, two default allocators are always equal.

1) Returns true.

2) Returns false.

The != operator is synthesized from operator==.

(since C++20)

lhs, rhs

default allocators to compare

1) true

2) false