/Prelude-v20.2.0/Bool/and.dhall

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The and function returns False if there are any False elements in the List and returns True otherwise

Examples

and [ True, False, True ] ≡ False
and ([] : List Bool) ≡ True

Source

{-|
The `and` function returns `False` if there are any `False` elements in the
`List` and returns `True` otherwise
-}
let and
: List Bool → Bool
= λ(xs : List Bool) →
List/fold Bool xs Bool (λ(l : Bool) → λ(r : Bool) → l && r) True

let example0 = assert : and [ True, False, True ] ≡ False

let example1 = assert : and ([] : List Bool) ≡ True

in and