It is uncommon that I am dissatisfied by the JavaScript language not having a perform that I want. One such case was summing an array of numbers — I used to be anticipating Math.sum or a likewise, baked in API. Worry not — summing an array of numbers is simple utilizing Array.prototype.scale back!
const numbers = [1, 2, 3, 4]; const sum = numbers.scale back((a, b) => a + b, 0);
The 0 represents the beginning worth whereas with a and b, one represents the operating complete with the opposite representing the worth to be added. You may additionally observe that utilizing scale back prevents uncomfortable side effects! I would nonetheless want one thing like Math.sum(...numbers) however a easy scale back will do!
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