Create an optional from original using allocator.
Declared in <bslstl_optional.h>
template<class t_ANY_TYPE>
Optional_Base(
std::allocator_arg_t allocatorArg,
allocator_type allocator,
BloombergLP::bslstl::Optional_CopyConstructFromStdOptional tag,
std::optional<t_ANY_TYPE> const& original);
Otherwise, create a disengaged Optional_Base object. Use the specified allocator to supply memory.
| Name | Description |
|---|---|
| allocator | allocator used to supply memory |
| original | source value used to initialize the optional |
| allocatorArg | tag selecting the allocator-extended constructor |
| tag | tag selecting this constructor overload |