scroll-list

Haskell package that provides functions for relocate an item within a list.

Usage

Add scroll-list to your package.yml and import Data.List.Scroll module.

Some examples are given below:

  >>> up 2 3 ["one", "two", "three"]
  ["three", "one", "two"]

  >>> up 4 1 ["one", "two", "three"]
  ["one", "two", "three"]

  >>> up 2 3 ["one", "two", "three"]
  ["three", "one", "two"]

  >>> down 0 1 ["one", "two", "three"]
  ["two", "one", "three"]

  >>> up 4 1 ["one", "two", "three"]
  ["one", "two", "three"]

  >>> down 0 4 ["one", "two", "three"]
  ["two", "three", "one"]