BloombergLP::bslma::AllocatorTraits_IsAlwaysEqual<ALLOC, false>

Synopsis

Declared in <bslma_allocatortraits.h>

template<class ALLOC>
struct AllocatorTraits_IsAlwaysEqual<ALLOC, false>
    : bsl::is_empty<ALLOC>

Description

This struct template sets the boolean type for the attribute named is_always_equal to bsl::is_empty<ALLOC> if the given (template parameter) ALLOC does not define such an alias (i.e., if false == AllocatorTraits_HasIsAlwaysEqual<ALLOCATOR_TYPE>::value).

Base Classes

Name	Description
`bsl::is_empty<ALLOC>`	Meta-function for detecting empty class types.

Type Aliases

Name	Description
`type`	Alias for this `integral_constant` specialization.
`value_type`	Alias for the (template parameter) `t_TYPE`.

Member Functions

Name	Description
`operator()`	Return a copy of the template argument `t_VALUE`.
`operator t_TYPE`	Return a copy of the template argument `t_VALUE`.

Static Data Members

Name	Description
`value`	The compile-time constant value of this metafunction.