:: (a -> b) -> [a] -> [b] -package:stm-hamt -package:adjunctions -is:exact -is:exact -package:shelly -package:generic-deriving -package:hedgehog -package:integration -package:basement -package:incipit-base is:exact package:deepseq

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