catmaybes -package:witherable -package:foundation -package:hedgehog -package:List package:linear-base
catMaybes xs discards the Nothings in xs
and extracts the as
The
catMaybes function takes a
Stream of
Maybes
and returns a
Stream of all of the
Just values.
concat has the same behavior, but is more general; it works
for any foldable container type.