根据两个键从对象数组中获取唯一值

Question

我有以下对象数组：

[{x: "1", y: "2", test: "9.000", class: "low-latency"},
{x: "2", y: "3", test: "9.000", class: "low-latency"},
{x: "22", y: "22", test: "0.000", class: "low-latency"},
{x: "22", y: "22", test: "127.000", class: "high-latency"},
{x: "5", y: "6", test: "96.000", class: "high-latency"},
{x: "6", y: "7", test: "66.000", class: "low-latency"},
{x: "7", y: "8", test: "71.000", class: "high-latency"}]

这是react reducer的一部分，因此它基于从套接字返回的数据每x秒更新一次。

我需要做的是确保当x和y具有相同的值时，应该只有一个。实现这一目标的最佳方法是什么？

Answer 1

最简单的方法是使用_.uniqBy和散列，例如。

_.uniqBy(arr, ({x,y}) => x+':'+y)