Specialization of AAModelIsSupported for MODEL == AAModelStl, yielding true_type if TYPE::allocator_type exists; otherwise, yielding false_type unless AAModelIsSupported<TYPE, AAModelBsl> is true. The latter condition exists so that bsl-AA always implies stl-AA even if AAModelIsSupported<TYPE, AAModelBsl> is explicitly specialized to true for a type that does not have an allocator_type member.
Declared in <bslma_aamodel.h>
template<class TYPE>
struct AAModelIsSupported<TYPE, AAModelStl>
: bsl::integral_constant<bool, HasAllocatorType<TYPE>::value || AAModelIsSupported<TYPE, AAModelBsl>::value>
| Name | Description |
|---|---|
bsl::integral_constant<bool, HasAllocatorType<TYPE>::value || AAModelIsSupported<TYPE, AAModelBsl>::value> | Metafunction representing a compile-time constant of the specified (template parameter) t_TYPE with the specified (template parameter) t_VALUE. |
| Name | Description |
|---|---|
type | Alias for this integral_constant specialization. |
value_type |
| Name | Description |
|---|---|
operator() | Return a copy of the template argument t_VALUE. |
operator value_type |
| Name |
|---|
value |