@elizarov I was looking at your gist, https://gist.github.com/elizarov/03425be1c4209d59ad813ddccab29313 very interesting. Have you (or somebody else) use it in real scenarios? How did it play? Could you share it?

It’s pretty popular patter from functional programming (and not only functional): Try Monad. This is part of stdlib from 1.3: https://blog.jetbrains.com/kotlin/2018/07/see-whats-coming-in-kotlin-1-3-m1/

yeah, I'm also looking at this, https://github.com/kittinunf/Result

This implementation has additional exception generic looks too awkward for me and our use casesx