std::unexpect_t, std::unexpect - cppreference.com (original) (raw)
| Defined in header | ||
|---|---|---|
| struct unexpect_t { explicit unexpect_t() = default; }; | (1) | (since C++23) |
| inline constexpr std::unexpect_t unexpect{}; | (2) | (since C++23) |
A tag type for in-place construction of an unexpected value in an
std::expectedobject.A constant of type const std::unexpect_t which is usually directly passed to a constructor of
std::expectedto construct an unexpected value.
[edit] Notes
Like other construction tag types, unexpect_t is a trivial, empty class with an explicit default constructor.