This component-private metafunction is derived from bsl::true_type if (template parameter) t_TYPE is not a tag type. This metafunction requires any cv and ref qualifications to be removed from the queried type.
Declared in <bslstl_variant.h>
template<class t_TYPE>
struct Variant_IsTag
: bsl::false_type| Name | Description |
|---|---|
bsl::false_type | Metafunction representing the boolean constant false. |
| Name |
|---|
Variant_IsTag<std::allocator_arg_t> |
Variant_IsTag<bsl::in_place_index_t<t_INDEX>> |
Variant_IsTag<bsl::in_place_type_t<t_TYPE>> |