public bool Applicative_Law_Ok_Holds(byte x, short y, Func <byte, short, int> f)
 {
     return(f.Curry()
            .AsResult <Func <byte, Func <short, int> >, string>()
            .Apply(x.AsResult <byte, string>())
            .Apply(y.AsResult <short, string>())
            .UnsafeGetOk()
            .Equals(f(x, y)));
 }