I just wanted to clarify that I specifically called out how easy it is to hire for. A lot of developers are pretty quick when it comes to adapting to a new language and there are virtues that lean in favor of a language being easy to pickup: sharing a paradigm with popular language, sharing conventions with popular languages and good documentation.
I have yet to work a day job in Rust, but I've worked in Java, C++ and Go so I'd be quite confident applying to a Rust position as long as it wasn't specifically security focused... I would be less confident in how quickly I could pickup Prolog - I think my brain works well for the nuances of the language but I'm less certain.
Yeah, this is why I’ve concentrated on learning different kinds of languages in my free time, rather than learning the latest thing: if I know Python, Ruby is relatively easy to learn but Haskell is more difficult. So, it’s worth my time to learn Haskell rather than Ruby.
I have yet to work a day job in Rust, but I've worked in Java, C++ and Go so I'd be quite confident applying to a Rust position as long as it wasn't specifically security focused... I would be less confident in how quickly I could pickup Prolog - I think my brain works well for the nuances of the language but I'm less certain.