filter -package:base -package:aeson -package:containers -package:pipes -package:utility-ht -package:unordered-containers -package:vector package:streaming

filter :: Monad m => (a -> Bool) -> Stream (Of a) m r -> Stream (Of a) m r
streaming Streaming.Prelude
Skip elements of a stream that fail a predicate
filterM :: Monad m => (a -> m Bool) -> Stream (Of a) m r -> Stream (Of a) m r
streaming Streaming.Prelude
Skip elements of a stream that fail a monadic test