Class MutableArray

[] public

Inherited from EmberArray packages/@ember/-internals/runtime/lib/mixins/array.js:278

returns

this

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']

firstObject Object | undefined public

Inherited from EmberArray packages/@ember/-internals/runtime/lib/mixins/array.js:306

returns

Object | undefined

The first object in the array

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

hasArrayObservers public

Inherited from EmberArray packages/@ember/-internals/runtime/lib/mixins/array.js:552

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

lastObject Object | undefined public

Inherited from EmberArray packages/@ember/-internals/runtime/lib/mixins/array.js:331

returns

Object | undefined

The last object in the array

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

length public

Inherited from EmberArray packages/@ember/-internals/runtime/lib/mixins/array.js:224

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.