Function

propertyKey
String
returns
ComputedProperty
computes a new array with all the unique elements from the dependent array

A computed property which returns a new array with all the unique elements from one or more dependent arrays.

Example

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import { union } from '@ember/object/computed';
import EmberObject from '@ember/object';

let Hamster = EmberObject.extend({
  uniqueFruits: union('fruits', 'vegetables')
});

let hamster = Hamster.create({
  fruits: [
    'banana',
    'grape',
    'kale',
    'banana',
    'tomato'
  ],
  vegetables: [
    'tomato',
    'carrot',
    'lettuce'
  ]
});

hamster.get('uniqueFruits'); // ['banana', 'grape', 'kale', 'tomato', 'carrot', 'lettuce']