2 using System
.Collections
;
3 using System
.Collections
.Generic
;
5 interface ITest
: IEnumerable
<int> {
9 IEnumerator IEnumerable
.GetEnumerator () { throw new Exception (); }
10 IEnumerator
<int> IEnumerable
<int>.GetEnumerator () { yield break; }
16 ITest foo
= new Test ();
17 foreach (int i
in foo
)
18 Console
.WriteLine (i
);