Aug 19, 2020
Stack Overflow, Commented (001): Get all non-unique values in an array
Might make this a series. Might not.
So, here's a shoutout to past me, who would have appreciated this, and anybody else out there who wants to look at an attempt at a commented breakdown.
Thank you to Christian Landgren for your solution.
For those on a smaller device, this might look a tad better for you in comparison to the embed below.