I've programmed only tiny bits in Go and Rust, so I will not comment on those languages. My main programming languages have been C++, Java, JavaScript and XSLT.

I've programmed only tiny bits in Go and Rust, so I will not comment on those languages. My main programming languages have been C++, Java, JavaScript and XSLT. Going from that background to Haskell is mindblowing. The language is very clean and there is very little mental capacity needed for worrying about errors because many errors that are possible in other languages are ruled out entirely or hard to make in the first place. Currently, I'm writing a website with Yesod. In Yesod, the URLs on the site are grouped in types and database queries are constructed from these checked types. Any change in database scheme will simply give a compile error. Rust also sounds attractive, but I think the web stack is not as nice as Yesod yet.