There is some how to get the function from spec registry in cljs? On clj I can resolve from symbo.

Web Development With Clojure, by by Dmitri Sotnikov: Still a good choice to get started?

@max yup!

is https://github.com/jiangts/webrtcljs (last commit 2015) the gest for cljs / web rtc? I'm mainly looking for a library to take camera capture and stream it to a div/canvas on the webpage

@romain thx!

Hello folks! Could you be so kind and correct my perception of server-side rendering in cljs&React? From what I have read: - Om has a hack to do this, foam, but it hasnt developed beyond hack since 2016 - Reagent - run it on Node or use JVM's JS engine - Rum - supports it natively So Rum seems the best (easiest) choice if server-side rendering is important. Or? Thanks!

@holyjak It depends on your project, for me server-side rendering was a reason to stay with closure and use hiccup to generate html, this way I can use the same functions to generate html client and server-side, but it has some disadvantages like not having a nice way to handle state. But since it’s more a static site with a minimal cms instead of an spa it worked out ok.

@p-himik & @mfikes Thank you for the replies. 👍 For now the lib doesn't do currency conversion, it will instead error out if you try to calculate with different currencies (unless the amount is zero). 🙂

I'm trying to use npm-deps with react-three-renderer npm package, and I've run into Undefined nameToPath for react_three_renderer. Any pointers?

Might be to do with externs, but I didn't think you needed those for npm-deps.

Is there a tool to calculate code coverage for clojurescript?

@dottedmag I think not, but Doo has open PR about this (https://github.com/bensu/doo/pull/125)

Hi. I’m using core.async in cljs and it’s early days. I’m wondering how/if I can wait for a go block to finish and get its return value, or what a reasonable pattern for solving a similar issue is?

(defn list-containers
  "TODO: write"
  ([] (list-containers {}))
  ([opts]
   (pprint @instances)
   (go
     (->> @instances
          (map (fn [[node-name instance]]
                 [node-name (<<< list-node-containers instance opts)]))
          (map (fn [[node-name c]]
                 [node-name (<! c)]))
          (into {})))))

i would like some other fn to be able to work on the resulting map coming out of this block - what’s best way to do so?

go blocks immediately return a channel. shouldn't you just take from that channel?

also, your types across arities don't look good. the zero arity calls the single arity with an empty map which you dereference

i don’t deref the map. @instances is a mount defstate var in the NS.

ah yes i misread

(defn zombie-instances
  []
  (println "let's go hunt for zombies!")
  (async/go
    (let [containers (async/<! (docker/list-containers))]
      (pprint (count containers))
      (pprint (first containers)))))

if i call that fn like this, then I get:

Error: <! used not in (go ...) block
    at Object.cljs$core$async$_LT__BANG_ [as _LT__BANG_] (/Users/sundbp/dev/bi/permafrost/target/shadow-cljs/builds/pf/dev/out/cljs-runtime/cljs.core.async.js:253:8)
    at /Users/sundbp/dev/bi/permafrost/target/shadow-cljs/builds/pf/dev/out/cljs-runtime/permafrost/docker.cljs:32:4

which seems inherently incorrect, as line 32 there is the go line in list-containers..

hm. ok. got it worked by re-arranging and not nesting go-blocks

are nested go-blocks a no-no?

ah, it’s the “stop translating at fn boundaries” and my use of map there. starting to get it.

avoid nested go blocks anyway

esp in cljs

go's cljs impl has some bugs around that

so if i have a structure {:foo1 chan1, :foo2 chan2}, and I like to take a value from each and concat them, my inclination would be to (mapcat (fn [[_ c] (<! c)) the-map-of-chans), but I can’t do that. any tips for how I can combine the results in that fashion by other constructs?

i guess the general question is how do I get a value from N channels, and and produce 1 value that is a fn of the N values.

doseq+atom+swap! I can think of, but seems uggly

ah. async/merge + async/reduce

also check alt! and alts!!

And beware of lazy sequences

yeah. starting to get the hang of it. quite different way to think in cljs+core.async world compared to clj+manifold.streams that I usually wrangle.

thanks

🙏:skin-tone-6: Halp

Between updating project.clj version numbers with lein ancient and trying to connect to a database instance... chaos erupted lol

Aha, it was encore (part of taoensso/sente). All better now.

spoke waaay too soon, looks lke it's datomic & guava dependency

Hello! What is the state-of-the-art router to use in Clojurescript with something like Om or Reagent?

A maintained project