Class MutableArray

public
Uses: MutableEnumerable , EmberArray
Defined in: packages/@ember/array/index.ts:1463
Module: @ember/array 
import MutableArray from '@ember/array/mutable';

This mixin defines the API for modifying array-like objects. These methods can be applied only to a collection that keeps its items in an ordered set. It builds upon the Array mixin and adds methods to modify the array. One concrete implementations of this class include ArrayProxy.

It is important to use the methods in this class to modify arrays so that changes are observable. This allows the binding system in Ember to function correctly.

Note that an Array can change even if it does not implement this mixin. For example, one might implement a SparseArray that cannot be directly modified, but if its underlying enumerable changes, it will change also.

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[] public

Module: @ember/array

Inherited from EmberArray packages/@ember/array/index.ts:304

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

Module: @ember/array

Inherited from EmberArray packages/@ember/array/index.ts:324

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

lastObject Object | undefined public

Module: @ember/array

Inherited from EmberArray packages/@ember/array/index.ts:346

returns
Object | undefined

The last object in the array

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

length public

Module: @ember/array

Inherited from EmberArray packages/@ember/array/index.ts:253

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.