Class Ember.NativeArray

public
Uses: Ember.Copyable , Observable , MutableArray
Defined in: packages/ember-runtime/lib/system/native_array.js:25
Module: @ember/array

The NativeArray mixin contains the properties needed to make the native Array support Ember.MutableArray and all of its dependent APIs. Unless you have EmberENV.EXTEND_PROTOTYPES or EmberENV.EXTEND_PROTOTYPES.Array set to false, this will be applied automatically. Otherwise you can apply the mixin at anytime by calling Ember.NativeArray.apply(Array.prototype).

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@each public

Module: @ember/array

Inherited from EmberArray packages/ember-runtime/lib/mixins/array.js:595

Returns a special object that can be used to observe individual properties on the array. Just get an equivalent property on this object and it will return an enumerable that maps automatically to the named key on the member objects.

@each should only be used in a non-terminal context. Example:

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myMethod: computed('posts.@each.author', function(){
  ...
});

If you merely want to watch for the array being changed, like an object being replaced, added or removed, use [] instead of @each.

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myMethod: computed('posts.[]', function(){
  ...
});

[] public

Module: @ember/array

Inherited from EmberArray packages/ember-runtime/lib/mixins/array.js:280

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.

This property overrides the default property defined in Ember.Enumerable.

firstObject Object public

Module: @ember/array

Inherited from Enumerable packages/ember-runtime/lib/mixins/enumerable.js:133

returns
Object
the object or undefined

Helper method returns the first object from a collection. This is usually used by bindings and other parts of the framework to extract a single object if the enumerable contains only one item.

If you override this method, you should implement it so that it will always return the same value each time it is called. If your enumerable contains only one object, this method should always return that object. If your enumerable is empty, this method should return undefined.

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let arr = ['a', 'b', 'c'];
arr.get('firstObject');  // 'a'

let arr = [];
arr.get('firstObject');  // undefined

hasArrayObservers public

Module: @ember/array

Inherited from EmberArray packages/ember-runtime/lib/mixins/array.js:499

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

lastObject Object public

Module: @ember/array

Inherited from Enumerable packages/ember-runtime/lib/mixins/enumerable.js:170

returns
Object
the last object or undefined

Helper method returns the last object from a collection. If your enumerable contains only one object, this method should always return that object. If your enumerable is empty, this method should return undefined.

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let arr = ['a', 'b', 'c'];
arr.get('lastObject');  // 'c'

let arr = [];
arr.get('lastObject');  // undefined

length public

Module: @ember/array

Inherited from EmberArray packages/ember-runtime/lib/mixins/array.js:213

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.