Only compared to something like C or explicit old-skool Java like threading. A lot of modern languages have CSP built-in or as a lib (Java, Scala, Haskell, Clojure, C++, Ada, Erlang, heck even Rust).

And Go is not quite expressive to address higher level, but common, constructs ( https://gist.github.com/kachayev/21e7fe149bc5ae0bd878 ) in a conceise and elegant way.

And if you access anything outside of channel provided stuff in Golang, you have to bring your own safety.

You seem very focused on what you can't do with it rather than focusing on what you can do with it. I've found, in practice, that you learn to adapt to not having that level of expressiveness and start thinking through problems the Go way. And I've come around to the viewpoint that expressiveness is also a liability of a language in addition to being a feature. Sharing code in a team becomes so much easier when using Go compared to other, more expressive, languages. And I've even come around to liking it for my personal projects too after returning to code I hadn't seen in months and immediately grokking it.

Maybe it's just my advancing age (for a programmer), but I find myself gravitating towards the "It's not finished when there's nothing left to add, but when there's nothing left to remove" mentality when it comes to programming languages. I find that I'm only willing to tolerate new language features when they introduce benefits that go beyond expressiveness.

> Maybe it's just my advancing age (for a programmer), but I find myself gravitating towards the "It's not finished when there's nothing left to add, but when there's nothing left to remove" mentality when it comes to programming languages. I find that I'm only willing to tolerate new language features when they introduce benefits that go beyond expressiveness.

Yes, "maybe it's just my experience and wisdom with regards to programming". Do you really expect anyone to fall for that crap?

It looks like from the comments on your gist, there are ways to do it. Whether it's expressive enough is subjective but it's worth pointing out that there _are_ solutions.