michael@0: var a = ['p', 'q', 'r', 's', 't'];
michael@0: var o = {p:1, q:2, r:3, s:4, t:5};
michael@0: for (var i in o) {
michael@0:     delete o.p;
michael@0:     delete o.q;
michael@0:     delete o.r;
michael@0:     delete o.s;
michael@0:     delete o.t;
michael@0: }
michael@0: for each (var i in a)
michael@0:     assertEq(o.hasOwnProperty(i), false);
michael@0: