empty -is:exact
The
Builder denoting a zero-length sequence of bytes. This
function is only exported for use in rewriting rules. Use
mempty otherwise.
An empty immutable array.
Smart constructor for
Empty.
The empty map.
empty == fromList []
size empty == 0
The empty map.
empty == fromList []
size empty == 0
Construct an empty set.
>>> HashSet.empty
fromList []