Algorithmen & Datenstrukturen mit Java: ds.util.Undef

1package ds.util;

3import java.util.NoSuchElementException;

5public class Undef {

6 public static RuntimeException undef(String msg) {

7 return

8 new NoSuchElementException(msg);

9 }

11 // undefined has an arbitrary type as result type

12 // so undefined may be called in arbitrary expression contexts

13 public static <A> A undefined(String msg) {

14 throw

15 undef(msg);

16 }

17}