Data.List.InnToOut

Various additional operations on lists.

Operation to apply a function that creates an inner list to an element of the outer list

mapI :: (a -> Bool) -> (a -> [a]) -> [a] -> [a]

Function that applies additional function f :: a -> [a] to a if p a = True

mapI2 :: (a -> Bool) -> (a -> b) -> (a -> [b]) -> [a] -> [b]

Function that applies additional function f :: a -> b to a if p a = True and otherwise another function g :: a -> [b] to [a] to obtain [b]

mapI3 :: (a -> Bool) -> (a -> b) -> (b -> d) -> (a -> c) -> (c -> d) -> [a] -> [d]

Function that can apply two different ways of computing something depending of the predicate value p :: a -> Bool for the [a]. Similar to arrow techniques.