concat package:rio

O(n) Concatenate a list of ByteStrings.

The concatenation of all the elements of a container of lists.

Examples

Basic usage:

>>> concat (Just [1, 2, 3])
[1,2,3]

>>> concat (Left 42)
[]

>>> concat [[1, 2, 3], [4, 5], [6], []]
[1,2,3,4,5,6]

O(n) Concatenate a list of Texts.

Map a function over a ByteString and concatenate the results

Map a function over all the elements of a container and concatenate the resulting lists.

Examples

Basic usage:

>>> concatMap (take 3) [[1..], [10..], [100..], [1000..]]
[1,2,3,10,11,12,100,101,102,1000,1001,1002]

>>> concatMap (take 3) (Just [1..])
[1,2,3]

O(n) Map a function over a Text that results in a Text, and concatenate the results.

Reduces a structure of lists to the concatenation of those lists.

Examples

Basic usage:

>>> biconcat ([1, 2, 3], [4, 5])
[1,2,3,4,5]

>>> biconcat (Left [1, 2, 3])
[1,2,3]

>>> biconcat (BiList [[1, 2, 3, 4, 5], [6, 7, 8]] [[9]])
[1,2,3,4,5,6,7,8,9]

Given a means of mapping the elements of a structure to lists, computes the concatenation of all such lists in order.

Examples

Basic usage:

>>> biconcatMap (take 3) (fmap digitToInt) ([1..], "89")
[1,2,3,8,9]

>>> biconcatMap (take 3) (fmap digitToInt) (Left [1..])
[1,2,3]

>>> biconcatMap (take 3) (fmap digitToInt) (Right "89")
[8,9]

Fold a list using the monoid. For most types, the default definition for mconcat will be used, but the function is included in the class definition so that an optimized version can be provided for specific types.

>>> mconcat ["Hello", " ", "Haskell", "!"]
"Hello Haskell!"