empty -package:unordered-containers -package:utf8-string -package:text
The
Builder denoting a zero-length sequence of bytes. This
function is only exported for use in rewriting rules. Use
mempty otherwise.
The empty map.
empty == fromList []
size empty == 0
The empty map.
empty == fromList []
size empty == 0
O(1). The empty Builder, satisfying
Construct the empty value for a datatype. For algebraic datatypes, the
leftmost constructor is chosen.