concatMap package:rio

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.

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]