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