Currently, the "best" way to loop through the result of a QueryList (as done in the ui-tabs sample at http://plnkr.co/edit/9E7T5XyLvn0SNQTOrVrJ?p=preview) is to use .toArray().forEach(). Here .toArray() copies the original array before allowing you to iterate through it. At least that's what I'm seeing when I'm running through the code.

Also, since it supports map, reduce and filter already, I think forEach should generally be available too.