Using Angular and Meteor together: improved collection updates

angular-meteor-update-collection.js

// compare newArray and oldArray, copy unchanged oldArray items over to 
// newArray, hence bypass Angular dirty check for these items
function updateCollection(newArray, oldArray) {
  if (!newArray || !oldArray) return newArray;

  for (var i = 0; i < newArray.length; i++) {
    for (var j = 0; j < oldArray.length; j++) {
      if (angular.equals(newArray[i], oldArray[j])) {
        newArray[i] = oldArray[j];
        break;
      }
    }
  }

  return newArray;
}

// updated data binding using updateCollection
autorun($scope, function() {
  Meteor.subscribe('myMeteorCollection');
  // $scope.myModel = MyMeteorCollection.find().fetch();
  $scope.myModel = updateCollection(MyMeteorCollection.find().fetch(), $scope.myModel);
});