michael@0: var obj = { a:1, b:1, c:1, d:1, e:1, f:1, g:1 };
michael@0: var sum = 0;
michael@0: for each (var i in obj) {
michael@0:     sum += i;
michael@0:     delete obj.f;
michael@0: }
michael@0: 
michael@0: // this isn't even implemented to work yet; just don't crash or iloop