empty -package:containers

The identity of <|>

empty <|> a     == a
a     <|> empty == a

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.

Construct an empty map.

Construct an empty map.

Construct an empty set.

>>> HashSet.empty
fromList []

O(1). The empty Builder, satisfying

• toLazyByteString empty =
  empty

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.

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.

Construct the empty value for a datatype. For algebraic datatypes, the leftmost constructor is chosen.

An empty Graph.

The empty map.

empty      == fromList []
size empty == 0

The empty set.

Create an empty byte array

Create an empty byte array

empty is a DList with no elements. empty obeys the law:

toList empty = []