Haskell Language List Comprehensions Basic List Comprehensions
Example
Haskell has list comprehensions, which are a lot like set comprehensions in math and similar implementations in imperative languages such as Python and JavaScript. At their most basic, list comprehensions take the following form.
[ x | x <- someList ]
For example
[ x | x <- [1..4] ] -- [1,2,3,4]
Functions can be directly applied to x as well:
[ f x | x <- someList ]
This is equivalent to:
map f someList
Example:
[ x+1 | x <- [1..4]] -- [2,3,4,5]
