Create a variant object holding a copy of original's alternative using allocator.
Declared in <bslstl_variant.h>
template<class t_FIRST = t_HEAD>
requires BloombergLP::bslstl::
Variant_IsCopyConstructibleAll<t_FIRST, t_TAIL...>::value
variant(
std::allocator_arg_t allocatorArg,
allocator_type allocator,
variant const& original);Create a variant object holding the same alternative (if any) as the specified original object. If this variant is allocator-aware, the specified allocator is used to supply memory. If the original object is not valueless by exception`, the contained value is copy-constructed from the contained value of original. This constructor is deleted unless all alternatives are copy constructible.
| Name | Description |
|---|---|
| allocatorArg | tag selecting the allocator-extended overload |
| allocator | allocator used to supply memory |
| original | variant to copy |