<b>(a)</b> Stack s = ...; foreach(int i in s) Console.WriteLine(i); <b>(b)</b> Stack s = ...; IEnumerable enumerable = (IEnumerable) s; IEnumerator enumerator = enumerable.GetEnumerator(); while (enumerator.MoveNext()) { int i = (int) enumerator.Current; Console.WriteLine(i); }
Example 7: (a) foreach-style iteration over a collection; (b) the equivalent "by hand" iteration, using the IEnumerable and IEnumerator interfaces.