:: a -> a package:incipit-base

id :: a -> a
incipit-base Incipit.Base
Identity function. 
id x = x
This function might seem useless at first glance, but it can be very useful in a higher order context.

Examples

>>> length $ filter id [True, True, False, True]
3

>>> Just (Just 3) >>= id
Just 3

>>> foldr id 0 [(^3), (*5), (+2)]
1000