michael@0: // A set iterator can cope with removing the next entry, then the current entry.
michael@0: 
michael@0: load(libdir + "iteration.js");
michael@0: 
michael@0: var set = Set("abcd");
michael@0: var iter = set[std_iterator]();
michael@0: assertIteratorNext(iter, "a");
michael@0: assertIteratorNext(iter, "b");
michael@0: set.delete("c");
michael@0: set.delete("b");
michael@0: assertIteratorNext(iter, "d");
michael@0: assertIteratorDone(iter, undefined);