My main reason? Refactoring. Over the years I've become very good at refactoring; I've actually been called a refactoring machine. I have a lot of experience refactoring really, really terrible code. Yes, this sucks, I have a history of picking the wrong job. Fortunately though, I also have some experience refactoring really nice code as well. The code that I'm working on now in Ruby is fairly new, and quite good. All the Scala code that I write is pretty good (room for improvement, but pretty good).
I can refactor so easily in Scala with huge confidence and I can't do that in Ruby at all. In Ruby:
- It takes a long time to make major refactorings.
- I'm never fully confident in my refactorings and almost always get annoyed by runtime errors.
- Sometimes the stack traces are all messed up and I can't figure out where my actual error is.
- Most code you run into isn't going to have enough test coverage to help anyway.
- For all the preachers of TDD and instant feedback - tests untimately/inevitably take (far) longer than the compiler. So I really don't have the instant feedback I need.
- If you skip refactorings in Ruby because they are hard, your code becomes harder and harder to refactor. This goes for statically typed languages as well, but, it's a lot harder with Ruby, especially considering the points above.
- Ad infinitum...
In my next post I'm going to cover a bunch of major refactorings I just did to my Lexer, and how easy it was.
So you got a job to work on Scala?ReplyDelete
no. i dont think i suggested that, did i? i'm not looking for a new job. im more focused on returning to school.ReplyDelete
totally agree with this articleReplyDelete
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Kinda thin, Jack. Could you provide some actual examples, or even anecdotes? From here it looks like this is a fancy way of saying "I like Scala" which is fine. I like vanilla ice cream. See what I mean?ReplyDelete
Thin indeed. All feeling? I don't think so, but certainly some feelings are involved and I do like Scala a lot more. I don't really have time to document it, especially now that I'm no longer writing Ruby and I'm doing Scala full time. I think most of the stuff I wrote is pretty well known and written about. I found most of the time my Ruby code was write once, and pray you made the right design decisions and don't have to refactor. I don't feel that way with Scala. I'm not claiming this isn't thin, which is why I said, "My" debate ends, and said things like, "for me". I did this intentionally as to not say Scala is indeed better. I don't want to get into battles like that. I do think Ruby has it's place and I think that if you just want to satisfy your business by getting boring, easy web apps done, and done quickly (but not fast), Rails is a great choice. I HATE writing webapps, so that might be another reason why I shy away from Ruby/Rails. I want to study languages and Scala certainly more academic. Studying Ruby for a while was helpful though, to my purpose, and I appreciate the time I spent with it. I'm done though.ReplyDelete
I've always maintained that I like Ruby, btw. You can see my other posts. I certainly enjoyed it more than Java.
Hopefully that gives you a little more insight into where I'm coming from and my motivations for writing this post. Sorry it was thin. I have a lot of work to do.