Return an optional object containing a t_TYPE object created by invoking a bsl::optional allocator-extended in_place_t constructor with the specified alloc as the allocator argument, and specified il and args as the constructor arguments. Note that this function will fail to compile if t_TYPE doesn't use allocators.
Declared in <bslstl_optional.h>
template<
class t_TYPE,
class t_INIT_LIST_TYPE,
class... t_ARGS>
bsl::optional<t_TYPE>
make_optional(
std::allocator_arg_t,
bsl::optional<t_TYPE>::allocator_type const& alloc,
std::initializer_list<t_INIT_LIST_TYPE> il,
t_ARGS&&... args);