Return this optional if engaged; otherwise invoke func.
Declared in <bslstl_optional.h>
Return this optional if engaged; otherwise invoke func.
template<class t_FUNC>
constexpr
optional<t_TYPE>
or_else(t_FUNC&& func) const &
requires conjunction_v<std::is_invocable<t_FUNC>,
std::is_copy_constructible<t_TYPE>>;Return this optional if engaged; otherwise invoke func.
template<class t_FUNC>
constexpr
optional<t_TYPE>
or_else(t_FUNC&& func) &&
requires conjunction_v<std::is_invocable<t_FUNC>,
std::is_move_constructible<t_TYPE>>;this optional if engaged, otherwise the result of func
| Name | Description |
|---|---|
| func | callable invoked with the contained value or when empty |