| data ExitCode |
| = | ExitSuccess | indicates successful termination; |
| | | ExitFailure Int | indicates program failure with an exit code. The exact interpretation of the code is operating-system dependent. In particular, some values may be prohibited (e.g. 0 on a POSIX-compliant system). |
Defines the exit codes that a program can return.
| instance Eq ExitCode |
| instance Ord ExitCode |
| instance Read ExitCode |
| instance Show ExitCode |
| exitWith :: ExitCode -> IO a |
| exitFailure :: IO a |
| exitSuccess :: IO a |