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