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Module: System
Datatype: ExitCode
Description: The ExitCode type defines the exit codes that a program can return. ExitSuccess indicates successful termination; and ExitFailure code indicates program failure with value code. The exact interpretation of code is operating-system dependent. In particular, some values of code may be prohibited (for instance, 0 on a POSIX-compliant system).
Definition: 
data ExitCode = ExitSuccess | ExitFailure Int 
                deriving (Eq, Ord, Read, Show)
In function types: ExitCode -> IO a : exitWith
String -> IO ExitCode : system



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