Safe Haskell	Safe-Inferred

Util.Exceptions

Description

Utilities for exceptions.

Synopsis

ignoreEnoent :: IO a -> IO (Maybe a)
ignoreEnoent_ :: IO a -> IO ()
ignoreEOF :: IO a -> IO (Maybe a)
ignoreIOError :: IO a -> IO (Maybe a)
ignoreError :: Exception.Exception e => (e -> Bool) -> IO a -> IO (Maybe a)
tryIO :: IO a -> IO (Either IO.Error.IOError a)

Documentation

ignoreEnoent :: IO a -> IO (Maybe a) Source #

If op raised ENOENT, return Nothing.

ignoreEnoent_ :: IO a -> IO () Source #

ignoreEOF :: IO a -> IO (Maybe a) Source #

ignoreIOError :: IO a -> IO (Maybe a) Source #

Ignore all IO errors. This is useful when you want to see if a file exists, because some-file/x will not give ENOENT, but ENOTDIR, which is probably isIllegalOperation.

ignoreError :: Exception.Exception e => (e -> Bool) -> IO a -> IO (Maybe a) Source #

tryIO :: IO a -> IO (Either IO.Error.IOError a) Source #

Exception.try specialized to IOError.