import { sumBy } from "https://deno.land/x/30_seconds_of_typescript@v1.0.1/util.ts";
Returns the sum of an array, after mapping each element to a value using the provided function.
Use Array.prototype.map()
to map each element to the value returned by fn
, Array.prototype.reduce()
to add each value to an accumulator, initialized with a value of 0
.