CalamityCommands.Internal.Utils

Internal utilities and instances

Documentation

whenJust :: Applicative m => Maybe a -> (a -> m ()) -> m ()

whenM :: Monad m => m Bool -> m () -> m ()

unlessM :: Monad m => m Bool -> m () -> m ()

lastMaybe :: Maybe a -> Maybe a -> Maybe a

leftToMaybe :: Either e a -> Maybe e

rightToMaybe :: Either e a -> Maybe a

justToEither :: Maybe e -> Either e ()

mapLeft :: (a -> c) -> Either a b -> Either c b

(<<$>>) :: (Functor f, Functor g) => (a -> b) -> f (g a) -> f (g b) infixl 4

(<<*>>) :: (Applicative f, Applicative g) => f (g (a -> b)) -> f (g a) -> f (g b) infixl 4

(<.>) :: Functor f => (a -> b) -> (c -> f a) -> c -> f b infixl 4