Bool.Extra

Convenience functions for working with Bools

Basics

all : List Bool -> Bool

All the bools are true.

all [ True, True ] == True


all [ True, False ] == False


all [ False, False ] == False

none : List Bool -> Bool

None of the bools are true.

none [ True, True ] == False


none [ True, False ] == False


none [ False, False ] == True

any : List Bool -> Bool

At least one of the bools is true.

any [ True, True ] == True


any [ True, False ] == True


any [ False, False ] == False

notAll : List Bool -> Bool

Not all of them are true

notAll [ True, True ] == False


notAll [ True, False ] == True


notAll [ False, False ] == True

allPass : List (a -> Bool) -> a -> Bool

Determine if all predicates are satisfied by the value.

allPass [ (>) 20, (<) 10 ] 11 == True


allPass [ (>) 20, (<) 10 ] 21 == False


allPass [ (>) 20, (<) 10 ] 4 == False


allPass [] 21 == True

anyPass : List (a -> Bool) -> a -> Bool

Determine if any predicate is satisfied by the value.

anyPass [ (>) 20, (<) 10 ] 100 == True


anyPass [ (>) 20, (==) 10 ] 21 == False


anyPass [] 21 == False