# operator==,!=(std::experimental::pmr::polymorphic_allocator)

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< cpp‎ | experimental‎ | polymorphic allocator

template< class T1, class T2 > bool operator==( const polymorphic_allocator<T1>& lhs, const polymorphic_allocator<T2>& rhs ) noexcept; |  |
template< class T1, class T2 > bool operator!=( const polymorphic_allocator<T1>& lhs, const polymorphic_allocator<T2>& rhs ) noexcept; |  |

Compares two polymorphic allocators. Two polymorphic allocators compare equal if their underlying memory resource compares equal.

1) Returns *lhs.resource() == *rhs.resource().
2) Returns !(lhs == rhs).

### Parameters

lhs, rhs | - | polymorphic allocators to compare

### Return value

1) *lhs.resource() == *rhs.resource()
2) !(lhs == rhs)
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