unzip -package:streaming

unzip transforms a list of pairs into a list of first components and a list of second components.

Examples

>>> unzip []
([],[])

>>> unzip [(1, 'a'), (2, 'b')]
([1,2],"ab")

Generalization of Data.List.unzip.

Examples

>>> unzip (Just ("Hello", "World"))
(Just "Hello",Just "World")

>>> unzip [("I", "love"), ("really", "haskell")]
(["I","really"],["love","haskell"])

Warning: This function will be made monomorphic in base-4.22, consider switching to Data.Functor.unzip

O(n) unzip transforms a list of pairs of bytes into a pair of ByteStrings. Note that this performs two pack operations.

unzip transforms a list of pairs of Chars into a pair of ByteStrings. Note that this performs two pack operations.

O(n) unzip transforms a list of pairs of chars into a pair of ByteStrings. Note that this performs two pack operations.

Unzip a sequence of pairs.

unzip ps = ps `seq` (fmap fst ps) (fmap snd ps)

Example:

unzip $ fromList [(1,"a"), (2,"b"), (3,"c")] =
(fromList [1,2,3], fromList ["a", "b", "c"])

See the note about efficiency at unzipWith.

O(min(m,n)) Unzip a vector of pairs.

O(min(m,n)) Unzip a vector of pairs.

O(1) Unzip 2 vectors.

O(1) Unzip 2 vectors.

unzip transforms a list of pairs into a list of first components and a list of second components.

>>> unzip []
([],[])

>>> unzip [(1, 'a'), (2, 'b')]
([1,2],"ab")

Generalization of Data.List.unzip. Since: 4.19.0.0

The unzip function is the inverse of the zip function.

Caution: Every pair member has a reference to the argument of unzip. Depending on the consumption pattern this may cause a memory leak. For lists, I think, you should generally prefer unzip.

Like standard unzip but more lazy. It is Data.List.unzip undefined == undefined, but unzip undefined == (undefined, undefined).

Unzip for stict pairs into a (lazy) pair of lists.

Takes apart a stream of pairs, producing a pair of input streams. Reading from either of the produced streams will cause a pair of values to be pulled from the original stream if necessary. Note that reading n values from one of the returned streams will cause n values to be buffered at the other stream. Access to the original stream is thread safe, i.e. guarded by a lock.

unzip transforms a list of pairs into a list of first components and a list of second components.

O(1) Unzip 2 vectors

O(1). Unzip an unboxed array.

Converts a list of pairs into two separate lists of elements