empty -package:unordered-containers -package:utf8-string

The identity of <|>
O(1) The empty ByteString
The Builder denoting a zero-length sequence of bytes. This function is only exported for use in rewriting rules. Use mempty otherwise.
O(1). The empty ShortByteString.
O(1) The empty Text.
An empty immutable array.
The empty stream.
Smart constructor for Empty.
The empty map.
empty      == fromList []
size empty == 0
The empty set.
The empty map.
empty      == fromList []
size empty == 0
The empty sequence.
The empty set.
Construct an empty map.
O(1) The empty vector.
Empty Bundle
Empty Bundle
O(1) The empty vector.
O(1) The empty vector.
O(1) The empty vector.
O(1) The empty vector.
O(1). The empty Builder, satisfying
The empty document, with no height and no width. empty is the identity for <>, <+>, $$ and $+$, and anywhere in the argument list for sep, hcat, hsep, vcat, fcat etc.