:: (a -> b) -> [a] -> [b] -package:comonad -package:adjunctions -package:basement -package:Cabal-syntax -package:base-compat-batteries -is:exact -package:foundation -package:base -package:appar -package:base-prelude -package:vector package:deepseq

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