failwith : string -> 'a
STRUCTURE
Feedback
SYNOPSIS
Raise a HOL_ERR.
DESCRIPTION
The function failwith raises a HOL_ERR with default values. This is useful when detailed error tracking is not necessary.

failwith differs from fail in that it takes an extra string argument, which is typically used to tell which function failwith is being called from.

FAILURE
Always fails.
EXAMPLE
- failwith "foo" handle e => Raise e;

Exception raised at ??.failwith:
foo
! Uncaught exception:
! HOL_ERR

SEEALSO
Feedback, fail, Raise, HOL_ERR
HOL  Kananaskis-13