On: The 2011 State of Clojure Survey is Open

[jonnytran]

Fair enough. But if you want to start citing examples, I could say the same about Clojure. As far as I know, without JVM changes there's no way in Clojure to implement conditions and restarts in a way that allows you to handle thrown exceptions from code that doesn't know about conditions. OTOH this is just a library in Ruby. https://github.com/quix/cond

I don't want to get academic/knit-picky. I guess my point is even though living on the JVM definitely has some big advantages, it also has some drawbacks.

I'm not trying to knock Clojure. I think it's great. But this thread is about why you're not using it. So I'm just speaking to that.

[Edited to talk less about Ruby and more about Clojure.]

[weavejester → jonnytran]

Cond looks a lot like the Clojure error-kit library:

    (deferror divide-by-zero
      {:msg "Division by zero})

    (defn divide [x y]
      (if (zero? y)
        (raise divide-by-zero)
        (/ x y)))

    (with-handler
      (divide 10 2)
      (divide 18 3)
      (divide 4 0)
      (divide 7 0)
      (handle divide-by-zero
        (continue-with 42)))

Admittedly this doesn't violate your general point; there are things like continuations that are hard to do with Clojure due to limitations the JVM. However, I tend to find there aren't many things Clojure can't do, and in general it seems more flexible and better designed than Ruby.

[swannodette → jonnytran]

Uh, the same way that Ruby can't really help with C errors and C can't deal w/ Ruby errors, right?