Documentation

Create singleton ShortByteString.

>>> one 97 :: ShortByteString
"a"

ShortByteString.length (one x) == 1

Create singleton lazy ByteString.

>>> one 97 :: LByteString
"a"

LByteString.length (one x) == 1

Create singleton strict ByteString.

>>> one 97 :: ByteString
"a"

ByteString.length (one x) == 1

Create singleton IntSet.

>>> one 42 :: IntSet
fromList [42]

IntSet.size (one x) == 1

Create singleton lazy Text.

>>> one 'a' :: LText
"a"

LText.length (one x) == 1

Create singleton strict Text.

>>> one 'a' :: Text
"a"

Text.length (one x) == 1

Allows to create a singleton list. You might prefer function with name one instead of pure or (:[]).

>>> one 42 :: [Int]
[42]

length (one @[Int] x) == 1

Allows to create singleton NonEmpty list. You might prefer function with name one instead of pure or (:|[]).

>>> one 42 :: NonEmpty Int
42 :| []

length (one @(NonEmpty Int) x) == 1

Create singleton IntMap from key-value pair.

>>> one (3, "foo") :: IntMap Text
fromList [(3,"foo")]

length (one @(IntMap String) x) == 1

Create singleton Seq.

>>> one 42 :: Seq Int
fromList [42]

length (one @(Seq Int) x) == 1

Create singleton Set.

>>> one 42 :: Set Int
fromList [42]

length (one @(Set Int) x) == 1

Create singleton HashSet.

>>> one 42 :: HashSet Int
fromList [42]

length (one @(HashSet Int) x) == 1

Create singleton Map from key-value pair.

>>> one (3, "foo") :: Map Int Text
fromList [(3,"foo")]

length (one @(Map Int String) x) == 1

Create singleton HashMap from key-value pair.

>>> one (3, "foo") :: HashMap Int Text
fromList [(3,"foo")]

length (one @(HashMap Int String) x) == 1