michael@0: var a = [];
michael@0: for (var i = 0; i < 9; i++)
michael@0:     a[i] = 0;
michael@0: var b = [x === "0" && true for (x in a)];
michael@0: assertEq(b[0], true);
michael@0: for (var i = 1; i < 9; i++)
michael@0:     assertEq(b[i], false);