title: Foreach on Angularfire - Avoid iterating over methods?
body: <p>I'm retrieving some data from firebase, which gives me an object that looks something like this:</p>
  
  <pre><code>$add: function (item) {
  $auth: function (token) {
  $bind: function (scope, name, defaultFn) {
  $child: function (key) {
  $getIndex: function () {
  $getRef: function () {
  $id: "tasks"
  $off: function (type, callback) {
  $on: function (type, callback) {
  $remove: function (key) {
  $save: function (key) {
  $set: function (newValue) {
  $transaction: function (updateFn, applyLocally) {
  $update: function (newValue) {
  -JLCrhLLGqp-OZN-9toC: true
  -JLCrkqFxxxaV6eG8lrb: true
  __proto__: Object
  </code></pre>
  
  <p>I need to iterate over all the keys that looks like "-JLCrhLLGqp-OZN-9toC". </p>
  
  <p>My question is how is how I do this best? Can I somehow remove the $methods?</p>
  
  <p>Doing this in html is easy with ng-repeat, which seems to figure out what parts to ignore. But I can't figure out how to do it on the controller?  </p>