| Safe Haskell | Safe-Infered |
|---|
Ganeti.Utils.MonadPlus
Description
Utility functions for MonadPlus operations
- mretryN :: MonadPlus m => Int -> (Int -> m a) -> m a
- retryMaybeN :: Monad m => Int -> (Int -> MaybeT m a) -> m (Maybe a)
- retryErrorN :: MonadError e m => Int -> (Int -> m a) -> m a
Documentation
mretryN :: MonadPlus m => Int -> (Int -> m a) -> m aSource
Retries the given action up to n times.
The action signals failure by mzero.
retryMaybeN :: Monad m => Int -> (Int -> MaybeT m a) -> m (Maybe a)Source
Retries the given action up to n times.
The action signals failure by mzero.
retryErrorN :: MonadError e m => Int -> (Int -> m a) -> m aSource
Retries the given action up to n times until it succeeds.
If all actions fail, the error of the last one is returned.
The action is always run at least once, even if n is less than 1.