BloombergLP::bslma::UsesBslmaAllocator<bsl::optional<t_TYPE>>

Synopsis

Declared in <bslstl_optional.h>

template<class t_TYPE>
struct UsesBslmaAllocator<bsl::optional<t_TYPE>>
    : UsesBslmaAllocator<t_TYPE>

Base Classes

Name Description

UsesBslmaAllocator<t_TYPE> This metafunction is derived from true_type if TYPE adheres to the bslma allocator usage idiom and false_type otherwise. Note that this trait must be explicitly associated with a type in order for this metafunction to return true; simply having a constructor that implicitly converts bslma::Allocator * to TYPE is deprecated as a means of indicating that a type follows the bslma allocator usage idiom.

Name	Description
`UsesBslmaAllocator<t_TYPE>`	This metafunction is derived from `true_type` if `TYPE` adheres to the `bslma` allocator usage idiom and `false_type` otherwise. Note that this trait must be explicitly associated with a type in order for this metafunction to return true; simply having a constructor that implicitly converts `bslma::Allocator *` to `TYPE` is deprecated as a means of indicating that a type follows the `bslma` allocator usage idiom.

Type Aliases

Name	Description
`type`	Alias for this `integral_constant` specialization.
`value_type`

Member Functions

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

Static Data Members

Name
`value`