:: (a -> b) -> [a] -> [b] -package:quickcheck-instances -package:adjunctions -package:integration -package:basement -package:comonad -package:generic-deriving -package:semigroupoids -package:vector is:exact -package:appar package:deepseq

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