Class Ember.NativeArray

This is the handler for the special array content property. If you get this property, it will return this. If you set this property to a new array, it will replace the current content.

let peopleToMoon = ['Armstrong', 'Aldrin'];

peopleToMoon.get('[]'); // ['Armstrong', 'Aldrin']

peopleToMoon.set('[]', ['Collins']); // ['Collins']
peopleToMoon.get('[]'); // ['Collins']

The first object in the array, or undefined if the array is empty.

let vowels = ['a', 'e', 'i', 'o', 'u'];
vowels.firstObject; // 'a'

vowels.shiftObject();
vowels.firstObject; // 'e'

vowels.reverseObjects();
vowels.firstObject; // 'u'

vowels.clear();
vowels.firstObject; // undefined

Becomes true whenever the array currently has observers watching changes on the array.

let arr = [1, 2, 3, 4, 5];
arr.hasArrayObservers; // false

arr.addArrayObserver(this, {
  willChange() {
    console.log('willChange');
  }
});
arr.hasArrayObservers; // true

The last object in the array, or undefined if the array is empty.

Required. You must implement this method to apply this mixin.

Your array must support the length property. Your replace methods should set this property whenever it changes.