BooleanUnaryFunction
class BooleanUnaryFunction<A, OA : ObservableValue<A>>(argA: OA, lambda: (A) -> Boolean) : UnaryFunction<Boolean, A, OA> , ObservableBoolean
Boilerplate which avoids having to use generics. An ObservableBoolean which is calculated from 1 (unary) other ObservableValue.
See UnaryFunction (PropertyFunctions).