Func<int,int> f = (int x) => x*x; f (7);
ergänze alle Typen:
??? t = ??? g => ( ??? x => g (g (x)) ) ; t (f)(3);
(new int[]{3,1,4,1,5,9}).Select(x => x * 2); (new int[]{3,1,4,1,5,9}).Where(x => x > 3);