Cobra Forums

use System

class A<of T>
    def foo(action as Action<of int>)
        action(1)

    def foo<of TResult>(functor as Func<of int, TResult?>) as TResult?
        return functor(1)

class Program
    def main is shared
        a = A<of Program>()
        a.foo(do(i as int))
            print i
        functor as Func<of int, DateTime>?
        functor = do(i as int)
            return DateTime.now.addDays(i)
        print a.foo(functor)