Combining Predicates in F#

Question

Is there a standard way of logically combining predicates in F#? For example, let\'s say I have isCar x and isBlue x then I want something that gives m

Answer 1

You could do something like the following:

let predicates = [isCar; isBlue]
let isBlueCar x = predicates |> List.forall (fun predicate -> predicate x)

More generally:

let combinePredicates predicates =
    fun x -> predicates |> List.forall (fun predicate -> predicate x)

let isBlueCar = combinePredicates [isCar;isBlue]