what’s a better way to do this?

(let [users [{:id 1 :name "Michael"}
             {:id 2 :name "Steve"}
             {:id 3 :name "Ben"}
             {:id 4 :name "Michael"}]]
  (->> users 
       (group-by :name)
       (map (juxt key #(->> (val %) 
                            (map :id) 
                            (set) 
                            (hash-map :ids))))
       (into {})))

there's no way to avoid building a new map. But could use reduce-kv or into with a map transducer to avoid the intermediate sequence.

got it. thanks @alexmiller

i feel like such a newb guys, i’m looking at the ClojureScript QuickStart and can’t get cljs.jar to build the hello world example

java -cp cljs.jar:src clojure.main build.clj                                                                     
Error: Could not find or load main class clojure.main

doh; the cljs.jar file was an incomplete download

/facepalm

@chadhs: you might already know it, but using boot or lein would be much easier to run clj program or a repl to play with clojure code

@xhh oh definitely and thank you. the quickstart just has you grab the stand alone for a quick tour

the first real tutorial uses lein

so excited for that

my evil plan is to rewrite a frontend for a Django site that is currently backbone/coffeescript/icanhazjs in ClojureScript. crazy?

indeed, but not evil as long as it works out 😈

copief for the #C03S1L9DN channel: https://twitter.com/bus_kanaka/status/616026801412804608

haha, true

Hi, I'm wondering - what's the best way to introduce websockets connection in a ring app? I'm looking for a solution which doesn't require writing client side in clojurescript and would provide connection multiplexing (like channels in http://socket.io or elixir's phoenix framework). I'm aware of solutions like sente or aleph, but as stated before - am looking for a pure JS solution on the client side. Thanks!