There is KLIPSE here:

http://app.klipse.tech/
https://github.com/viebel/klipse

You might also take a look at:

cljsfiddle.com
https://gitlab.com/escherize/cljsfiddle

There are other online REPLs listed here:

http://clojurescript.org/community/resources

The self hosted clojurescript compiler has been used to good effect in quite a 
few places.

Good luck!

Alan

On Friday, September 23, 2016 at 9:43:21 AM UTC-7, Simon Brooke wrote:
> This is probably not a problem that affects many people...
> 
> As I understand it, I cannot compile a function in ClojureScript and have it 
> integrated into the current ClojureScript compiled image (if I'm wrong, 
> please tell me so. I'd really, really like to be wrong).
> 
> I have a web app which allows people to write rules for a cellular automaton, 
> and watch them run (you can see it here http://www.journeyman.cc/microworld/ 
> if you're interested). The problem is that all the computation happens server 
> side, so it doesn't scale. I need to move as much as possible of the 
> computation to client side.
> 
> A key feature of the application is that users can edit the rules - in fact, 
> they're encouraged to. That's what it's about. When the rules are edited 
> they're compiled into Clojure functions, which then run.
> 
> I can move all the function of the application client side except (at this 
> stage) compiling the rules. So I'm envisaging a version of the app which, 
> when the user edits the rules, the parsing happens client side and any parser 
> errors are shown to the user immediately, but when they decide to commit 
> their changes, the generated Clojure text is sent back to the server, where 
> it is compiled with the rest of the CLJC code into a new app.js JavaScript 
> image and served back to the client. The state of the world can be cached in 
> HTML5 local storage while this is being done.
> 
> The problem I see is this: if Alice and Bob are both using the system at the 
> same time, both edit rules, I don't want Alice getting an image with Bob's 
> rules in it (or vice versa). So I'm going to need to compile separate copies 
> of app.js for each client that connects, and serve the right one to the right 
> client.
> 
> Has anyone else tried anything like this? Did it work? What were the problems?
> 
> Cheers
> 
> Simon

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