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operator==,!=(std::scoped_allocator_adaptor) - cppreference.com

From cppreference.com

Defined in header <scoped_allocator>

template< class OuterAlloc1, class OuterAlloc2, class... InnerAllocs > bool operator==( const scoped_allocator_adaptor<OuterAlloc1, InnerAllocs...>& lhs, const scoped_allocator_adaptor<OuterAlloc2, InnerAllocs...>& rhs ) noexcept;

 (since C++11)

template< class OuterAlloc1, class OuterAlloc2, class... InnerAllocs > bool operator!=( const scoped_allocator_adaptor<OuterAlloc1, InnerAllocs...>& lhs, const scoped_allocator_adaptor<OuterAlloc2, InnerAllocs...>& rhs ) noexcept;

 (since C++11)
(until C++20)

Compares two scoped allocator adaptors. Two such allocators are equal if:

  • lhs.outer_allocator() == rhs.outer_allocator(), and
  • if sizeof...(InnerAllocs) > 0, lhs.inner_allocator() == rhs.inner_allocator().

The != operator is synthesized from operator==.

(since C++20)

Parameters

lhs, rhs - scoped allocator adaptors to compare

Return value

1) Returns true if lhs and rhs are equal, false otherwise.

2) Returns true if lhs and rhs are not equal, false otherwise.