sumBy

Calculate the statistical value of a field based on raw data

basic usage

argument

• arr: T[]: raw data
• func: (item: T) => number: calculate function

return

• number: statistical value

import { sumBy } from 'func-dash'
const arr = [{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }]
const result = sumBy(arr, item => item.n)
console.log(result) // 20