sum

将数组的所有项目相加

使用方法

给定一个项目数组，以及一个可选的将每个项目映射为数字的函数，将所有项目相加。

import * as _ from "radashi";

const fish = [
  {
    name: "Marlin",
    weight: 100,
  },
  {
    name: "Bass",
    weight: 10,
  },
  {
    name: "Trout",
    weight: 15,
  },
];

_.sum(fish, (f) => f.weight); // => 125