Function

sum (dependentKey) ComputedProperty public

Defined in packages/@ember/object/lib/computed/reduce_computed_macros.ts:76

Available since v1.4.0

import { sum } from '@ember/object/computed';

dependentKey

String

returns

ComputedProperty

computes the sum of all values in the dependentKey's array

A computed property that returns the sum of the values in the dependent array.

Example:

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import { sum } from '@ember/object/computed';

class Invoice {
  lineItems = [1.00, 2.50, 9.99];

  @sum('lineItems') total;
}

let invoice = new Invoice();

invoice.total; // 13.49