Get unique values from an array of objects based on two keys

Question

I have the following array of objects:

[{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"}]

This is a part of a react reducer so this gets updated every x number of seconds based on the data being returned from a socket.

What I need to do is make sure that when x and y have the same value - there should be just one of them. What is the best way to achieve this?

Answer 1

Simplest way is to use _.uniqBy and hash, eg.

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