map -package:containers -package:dlist -package:conduit -package:basement -package:psqueues -package:base-compat-batteries -package:insert-ordered-containers -package:dense-linear-algebra -package:monoidal-containers -package:hedgehog -package:text -package:vector package:vector-stream
Map a monadic function over a
Stream
Execute a monadic action for each element of the
Stream
Apply monadic function to each element and drop all Nothings