Create a Variant_Base object holding the alternative with index (template parameter) t_INDEX, direct-initialized from the specified args.
Declared in <bslstl_variant.h>
template<
size_t t_INDEX,
class... t_ARGS>
explicit
Variant_Base(
std::allocator_arg_t allocatorArg,
allocator_type allocator,
bsl::in_place_index_t<t_INDEX> inPlaceIndex,
t_ARGS&&... args);Create a Variant_Base object holding the alternative with index (template parameter) t_INDEX, direct-initialized from the specified args. If this Variant_Base is allocator-aware, the specified allocator is used to supply memory.
| Name | Description |
|---|---|
| allocatorArg | tag selecting the allocator-extended overload |
| allocator | allocator used to supply memory |
| inPlaceIndex | tag selecting the in-place-index constructor |
| args | arguments forwarded to the alternative's constructor |