failure_type<error_type, exception_type> as_failure() &&
Return the output from free function auto failure(T &&, ...)
containing a move from any errored and/or excepted state, thus leaving the outcome’s error and exception values in a moved-from state. Depending on the choice of error_type
and/or exception_type
, this function may therefore be destructive. The error and exception states are accessed using error_type &&assume_error() && noexcept
and exception_type &&assume_exception() && noexcept
.
Requires: Always available.
Complexity: Whatever that of error_type
’s and/or exception_type
’s move constructor is.
Guarantees: None.