dhall-1.24.0: dhall-lang/Prelude/Optional/any

{-
Returns `True` if the supplied function returns `True` for a present element and
`False` otherwise

Examples:

```
./any Natural Natural/even (Some 2) = True

./any Natural Natural/even (None Natural) = False
```
-}
let any
    : ∀(a : Type) → (a → Bool) → Optional a → Bool
    =   λ(a : Type)
      → λ(f : a → Bool)
      → λ(xs : Optional a)
      → Optional/fold a xs Bool f False

in  any