Haskus.Utils.Maybe

Utils for Maybe data type

Documentation

onNothing :: Maybe a -> a -> a

Flipped fromMaybe

onNothingM :: Monad m => m (Maybe a) -> m a -> m a

Flipped fromMaybeM

fromMaybeM :: Monad m => m a -> m (Maybe a) -> m a

fromMaybe in a Monad

headMaybe :: [a] -> Maybe a

Get the head of the list if the latter is not empty

module Data.Maybe