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| author |  Joey Hess <joeyh@joeyh.name> | 2015-09-13 13:39:48 -0400 |
|---|---|---|
| committer | Joey Hess <joeyh@joeyh.name> | 2015-09-13 13:39:48 -0400 |
| commit | 6b209cd8578a4509e67dc187271f5f3a193acd97 (patch) | |
| tree | 353b62e3fbe1e212e0af377722c3c3980a188826 /Utility/Exception.hs | |
| parent | 1e9b95d13b4bd3461add92096fc142ef5126eab9 (diff) | |
merge hlint changes from propellor
Diffstat (limited to 'Utility/Exception.hs')
| -rw-r--r-- | Utility/Exception.hs | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/Utility/Exception.hs b/Utility/Exception.hs index 30bcc9245..13000e033 100644 --- a/Utility/Exception.hs +++ b/Utility/Exception.hs @@ -39,10 +39,7 @@ catchBoolIO = catchDefaultIO False {- Catches IO errors and returns a Maybe -} catchMaybeIO :: MonadCatch m => m a -> m (Maybe a) -catchMaybeIO a = do - catchDefaultIO Nothing $ do - v <- a - return (Just v) +catchMaybeIO a = catchDefaultIO Nothing $ a >>= (return . Just) {- Catches IO errors and returns a default value. -} catchDefaultIO :: MonadCatch m => a -> m a -> m a |