These allocator-extended constructors cannot be called, and are provided only to prevent compilation errors when 'optional' is explicitly instantiated.
Declared in <bslstl_optional.h>
Optional_Base(
std::allocator_arg_t allocatorArg,
AllocType allocator);| Name | Description |
|---|---|
| allocatorArg | tag selecting the allocator-extended constructor |
| allocator | allocator used to supply memory |