:: Map k v -> (v -> Bool) -> Map k v package:streamly

prune :: (a -> Bool) -> t m a -> t m a
streamly Streamly.Internal.Data.Stream.IsStream
Strip all leading and trailing occurrences of an element passing a predicate and make all other consecutive occurrences uniq. 
prune p = dropWhileAround p $ uniqBy (x y -> p x && p y)

> Stream.prune isSpace (Stream.fromList "  hello      world!   ")
"hello world!"
Space: O(1) Unimplemented
takeWhileLast :: (a -> Bool) -> t m a -> t m a
streamly Streamly.Internal.Data.Stream.IsStream
Take all consecutive elements at the end of the stream for which the predicate is true. O(n) space, where n is the number elements taken. Unimplemented
takeWhileAround :: (a -> Bool) -> t m a -> t m a
streamly Streamly.Internal.Data.Stream.IsStream
Like takeWhile and takeWhileLast combined. O(n) space, where n is the number elements taken from the end. Unimplemented
dropWhileLast :: (a -> Bool) -> t m a -> t m a
streamly Streamly.Internal.Data.Stream.IsStream
Drop all consecutive elements at the end of the stream for which the predicate is true. O(n) space, where n is the number elements dropped. Unimplemented
dropWhileAround :: (a -> Bool) -> t m a -> t m a
streamly Streamly.Internal.Data.Stream.IsStream
Like dropWhile and dropWhileLast combined. O(n) space, where n is the number elements dropped from the end. Unimplemented