sumBy | /mod.ts | lodash_es@v0.0.2

function sumBy

import { sumBy } from "https://dotland.deno.dev/x/lodash_es@v0.0.2/mod.ts";

sumBy(array, iteratee)

This method is like _.sum except that it accepts iteratee which is invoked for each element in array to generate the value to be summed. The iteratee is invoked with one argument: (value).

Examples

var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];

_.sumBy(objects, function(o) { return o.n; }); // => 20

// The _.property iteratee shorthand. _.sumBy(objects, 'n'); // => 20

Parameters

array

The array to iterate over.

iteratee