I agree about cramming features across languages. Plus, Software dev is social. I only did this in code for myself.

That being said though, it actually fit really well in golang. Allowed functions that used to return ‘null, err’ to return an Either, which improved on all the downsides of returning null (if you return null your callers have to check for it).

It actually improved the ergonomics quite a bit. ‘Either’ fits nicely into golang, but I doubt it will become mainstream anytime soon.