Invoke this method when the contents of your enumerable has changed. This will notify any observers watching for content changes. If you are implementing an ordered enumerable (such as an Array), also pass the start and length values so that it can be used to notify range observers. Passing start and length values will also ensure that the computed properties firstObject and lastObject are updated.

Reduces an enumerable to the average of the items in the enumerable. If reducerProperty is passed, it will reduce that property. Otherwise, it will reduce the item itself.

Call this method from your unknownProperty() handler to implement automatic reduced properties. A reduced property is a property that collects its contents dynamically from your array contents. Reduced properties always begin with "@". Getting this property will call reduce() on your array with the function matching the key name as the processor.

The return value of this will be either the return value from the reduced property or undefined, which means this key is not a reduced property. You can call this at the top of your unknownProperty handler like so:

unknownProperty: function (key, value) { var ret = this.handleReduceProperty(key, value); if (ret === undefined) { // process like normal } }

Reduces an enumerable to the max of the items in the enumerable. If reducerProperty is passed, it will reduce that property. Otherwise, it will reduce the item itself.

Reduces an enumerable to the min of the items in the enumerable. If reducerProperty is passed, it will reduce that property. Otherwise, it will reduce the item itself.

Reduces an enumerable to the max of the items in the enumerable. If reducerProperty is passed, it will reduce that property. Otherwise, it will reduce the item itself.

Reduces an enumerable to the sum of the items in the enumerable. If reducerProperty is passed, it will reduce that property. Otherwise, it will reduce the item itself.