I notice that the sample code uses ≠ instead of !=, which would be cool if that actually worked. But it doesn’t: https://play.golang.org/p/N7EXWRQfvP
Yeah, the font the site uses for codes is Fira Code which has ligatures. It is still != although it is rendered as ≠ when Fira Code is used.
Curious, after skimming the “how it works”, I guess this just means that this is how facebook (or any other sites) might gather data about you rather than getting exactly what they have gathered?