Hi everyone. I have a clj web project (chestnut app) that I'd like to work on. When I evaluate application.clj there is a main method that starts a web server. However, once I execute the whole buffer in CIDER, there is no local server started.
(defn -main [& _]
(let [config (config)]
(-> config
app-system
component/start)
(println "Started chestnut-tutorial on" (str "http://localhost:" (:http-port config)))))
How is CIDER supposed to work with web servers?
To me this appears to be an important use-case that needs documentation.
If you’re using component, however, you might want to look at this workflow instead. https://github.com/stuartsierra/component/blob/master/README.md#entry-points-for-development
Well, actually, it's fine if your function is asyncronous
But if your function is synchronous I think it'll lock up the repl for you
A different way to do it (which I'm pretty sure is documented) is to add cider-nrepl to your project.clj. Then you can start your server normally and connect with
M-x cider-connect
The command is pretty smart and should offer tab-completion for your server
And I probably shouldn't give instructions off the top of my head about stuff I last worked on over a year ago 🙄
@Malabarba Yes, it makes sense that it shouldn't automatically evaluate function definitions. You have basically described: 1) start a server and inject your REPL inside it. I see that the current chestnut project supports 2) starting REPL with project context and executing
(run) or (go) to launch server. How do these things automagically work? Is it documented somewhere?
It goes with https://github.com/stuartsierra/component to manage starting and stopping the system/components
Anyway, you might have better luck in the #clojure channel on freenode or on slackchat, as this doesn't really have anything to do with emacs/cider
But I think I don't understand what you're asking now.
no problem!
Hi all. I recently upgraded cider after being a year or two stale in revision level (hey, it worked so well!). However the new emacs cider 0.16.0 revision has two problems for me. (1) Often the source code traversal is very slow when the nrepl is up. For example it can take seconds to start scrolling upward after jumping to end of file. (2) I thought perhaps things might be getter worse as my cider/repl session had been up for a while so was going to try to clear the whole cider buffer with C-c M-o, only the option to clear the buffer appears not to exist any more. Is there a way to do clear the whole cider buffer? I didn't find one after poking around for a bit.
Note that I'm talking about clojure source code traversal, not traversal of the nrepl buffer. I was only trying to clear that in case it was sucking computes as it has been known to do for large print representations and such.
You may get more responses in the Clojurians Slack, specifically the #cider channel. I happen to be working on a feature to avoid long lines of output in the repl (which would eliminate the slowdown problem) but in all my testing I have never seen excessive output lines in the repl affect interactions in other buffers.
The hangs occur specifically in the repl buffer itself.