Ember.js中的数组操作

Question

Is there a way to perform arithmetic operations such as average or max/mean over a set of array elements, that are loaded into an ArrayController or an ObjectController - this arithmetic operation would be computed again when the array is updated.

Also, how do we obtain the last object from the array in a controller and have the template display this last element?

Answer 1

Ember does not have specialized functions like mean and avg. You could easily implement it using a computed property, observing the elements of the array. This will give you exactly what you want: recomputed when the array is updated.

To display the last object, you could use this