:: (a -> b) -> [a] -> [b] -package:comonad -package:semigroupoids -package:appar -package:foundation -is:exact -is:exact -package:incipit-base -package:integration -package:basement -package:base-prelude package:deepseq

(<$!!>) :: (Monad m, NFData b) => (a -> b) -> m a -> m b
deepseq Control.DeepSeq
Deeply strict version of <$>.