Hello, I have been developing with Om and clojurescript for a few months now, and I do feel I am missing something to get as productive as I am when working with Haskell (or java for that matter).
I would appreciate some advices or pointers resources from more experienced people on how to get to the point where I can develop confidently, easily and with decent speed in clojurescript. Here are my main concerns and some experiences I can share to give more context: - compiler is slow: I have setup cljsbuild profile to use advanced optimisation which heavily slows down compiler. Even simple optimisation is rather slow. No optimisation is rather fast, but not that fast (several seconds...). Note that I "often" have to remove generated compiled file and target/ dir to get usable result when doing advanced optimisation, otherwise I got seemingly unrelated runtime errors in the UI - compiler is not very helpful in catching errors: Error messages are ok, at least better than default clojure and its sometimes huge stack trace (or is it something from cljsbuild?), but of course not having types means fewer errors got caught... This is not an issue when one has the fast feedback of the REPL but large compilation time makes it really unwieldy. This is particularly annoying in Om because it requires state to be stored in an atom which in some contexts can be manipulated directly and in some others need to be dereferenced... And it is very easy, at least for me, to forget/add an @ - unit tests are hard: code is mostly Om/react DOM building and ajax requests, so pure unit testing is not really useful or would need too much mocking. There seems to be a testing framework for React but I could not really figure how to use it given react is actually encapsulated under Om... I tried to write unit tests manipulating DOM elements but got stuck on how to simulate a change event. My JS-fu is probably lacking here but although I was able to synthesize a click, it was not possible for a change. - I resorted to selenium tests, but of course those are fragile and slow and I would like to avoid having to fire a server for testing part of client application - I tried to LightTable, but not being able to use repl/instarepl means I am left with a text editor less powerful than emacs. I user LightTable with clojure code and found it really nice so I would like to be able to use for clojurescript too. As I said, I have been coding for a living mostly in statically (or not so statically) typed languages (Java, Haskell), but I have been using clojure for side projects in the last few years and I really enjoy coding in clojure. So when I discovered Om I was really enthusiastic about its capabilities and the way it expanded my horizon to make programming in the browser a more pleasing experience. But my coding flow is not satisfying, it takes a long time to iterate so I tend to do larger steps which creates bigger mistakes which take a long time to track... And I positively hate using a debugged, especially with optimised clojurescript compiled code :-) So this post is really not a rant at all, I just got the feeling I am not doing things the right way and would like to be enlightened by people more knowledgeable than me. Thanks in advance, -- Arnaud Bailly -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojurescript+unsubscr...@googlegroups.com. To post to this group, send email to clojurescript@googlegroups.com. Visit this group at http://groups.google.com/group/clojurescript.
