Hey all, I just bumped some dependencies for a project i'm working on and now running lein figwheel errors with this...

clojure.lang.ExceptionInfo: No such namespace: cljsjs.react, could not locate cljsjs/react.cljs, cljsjs/react.cljc, or Closure namespace "cljsjs.react" {:tag :cljs/analysis-error}

No I did not have this problem bumping Figwheel, which other deps did you bump?

so for doing node.js style broadcasting from clojure server to cljs client is sente still the best option? Are there any others?

Or maybe is there a nice idiomatic wrapper for http://socket.io running on node.js?

@triss I would use websockets straight up.

ah ok, not thought of that/grokked it was possible...

thanks bhauman. do you know of any examples?

Not off the top of my head but I think the ws library is the node websocket library

thanks man. I might end up having a look. head scratching time.

https://einaros.github.io/ws/

https://closure-library.googlecode.com/git-history/docs/class_goog_net_WebSocket.html

@triss: i ended up using https://github.com/jarohen/chord and https://github.com/ztellman/aleph

Whats the best way to connect to MySql on Node? Should I use something like https://github.com/felixge/node-mysql?

@twillis: did you update cljs version to the latest one? if so, you need to bump up figwheel or cljsbuild to the latest SNAPSHOT release.

@rohit: thanks that fixed the issue.

ClojureScript 1.7.170 released! https://groups.google.com/forum/#!msg/clojurescript/AiCARjGT2Mg/J2TdxtHgBAAJ

Is there an equivalent to clojure.lang.IPersistentSet in ClojureScript?

@martinklepsch: ISet

@dnolen: ok so with Clojurescript the Persistent bit is just generally omitted?

yes but you’ll just want to look at the protocols to be sure

I don’t remember if http://cljs.info documents these ...

It does

but they don’t refer to their IPersistent*equivalents as they usually do I think

right these are the same protocols since pretty much day 1

we haven’t changed them

IPersistentCollection has cons, empty & equiv while ICollection only has -conj — wheres the rest defined?

@martinklepsch: there is no correspondence like this

That’s what I’m just noticing ^^

Rich Hickey refactored the protocol design based on the interface design

(deftype PersistentHashSet [meta hash-map ^:mutable __hash] — what’s the role of hash here?

@martinklepsch: holds the hash code

it’s for hash code caching

@martinklepsch: do you know why the cljsjs react externs contains React.ReactComponent when the es6 class is called React.Component?

@thheller: no.

@thheller: I wouldn’t be surprised if there is stuff from previous versions that didn’t get removed properly. PR welcome if you think that’s the case

I was wondering why om contains https://github.com/omcljs/om/blob/master/src/main/om/externs.js

Oh do the externs not contain React.Component?

no only React.ReactComponent in its place

I thought you were asking why they contain both.

Then that’s probably a bug

I think it should just be React.Component

would be nice if someone could verify that

not sure if React.ReactComponent is actually a thing

@martinklepsch: I don't know boot, what do I need to run to get a local version of that cljsjs package?

@thheller: boot package build-jar will install the cljsjs jar into your local repo

hmm nothing happens 😛

@thheller: make sure you have the latest executable. Maybe do export BOOT_VERSION “2.4.2”

@martinklepsch: new version worked, had 2.2.0 from brew

@thheller: 2.4.2 is also in brew btw

it gave me 2.4.1 just now

but yeah I got it through brew

ok verified that my problems were fixed by this

https://github.com/cljsjs/packages/pull/287

would be great if someone with an actual react app in production can verify

I only have some test stuff

@thheller: do the react sources contain a definition for React.ReactComponent? This sounds like something that should be documented in some changelog?

Hi guys! Does anyone know syntax for putting a function in between text in html, hiccup? Example: [:h5 "We've sent a verification email over to you at " { #(get-user) } "."]. Thanks!

@bojanx100: there’s no syntax for that but you can use (str “Hello “ name “!”)

@martinklepsch: Yes, this did the trick: [:h5 (str "We've sent a verification email over to you at " (get-user-and-count) ".")], Thanks!

In clojure there’s also format which can help with similar things.

@martinklepsch: I actually prefer it that way like String.format(). Thanks for pointing that out!

(instance? js/String "foo")                                 
;;=> false 
(instance? js/Number 20)
;;=> false

I believe this should work according to: http://dev.clojure.org/jira/browse/CLJS-98

[org.clojure/clojurescript "1.7.145”]

@denik: no guarantee that will work

Use the standard predicates

@dnolen I’d like to check the type once and dispatch on that

for performance reasons b/c dealing with very large colls

nvmd found a solution, thanks david!

(condp = (type x) ...

first time I made a custom cljs type, would be thankful for code-review/feedback https://github.com/martinklepsch/custom-comparator-set/blob/master/src/org/martinklepsch/cc_set/impl.cljs

@martinklepsch: you probably want to implement IFn and IPrintWithWriter

also IHash

IEquiv w/o IHash mean problems

also somebody should port https://github.com/ztellman/collection-check to ClojureScript

if this hasn’t already been done

haha, I was thinking that collection-check would be nice and then discovered there is no cljs version

is IPrintWithWriter analogous to extending print-method?

@martinklepsch: yep like print-method

(hash-combine (hash comparator) (hash (seq coll))) — does this look right?

@martinklepsch: hashing the comparator doesn’t make sense to me

I would just hash the underlying collection and be done with it

unless you think people will be combining your collection with similar collections together in sets and hash maps

probably that won’t be the case. are there any downsides hashing it though? it seems appropriate to me.

the comparator is a function hashing identity values doesn’t make sense

don’t do it

if two people provide the same logical function (but different implement), their collections will hash different

very broken

I see, that makes sense. Thanks David

ClojureScript documentation about all this Interface/Protocol/Type related stuff is sooooo much better than Clojure’s, 👏 👏 @shaunlebron

@martinklepsch: link to those docs?

I’d like to check it out

https://github.com/cljsinfo/cljs-api-docs/blob/catalog/refs/library/cljs.core.md this basically @tmtwd

yeah

I use it via Dash.app which lets me easily sift out protocols only etc

I think the clojure docs could be stronger

I was looking around for add-watch

ended up figuring it out from the hoplon docs

I upgraded to cljs 1.7.170 and now my project won’t build 😞

➜  zoom-recordings git:(play-back-url) ✗ lein figwheel
Figwheel: Starting server at 
Focusing on build ids: build_needs_id_7801
Compiling "target/classes/public/js/app.js" from ["src/zoom_recordings/ui"]...
Compiling "target/classes/public/js/app.js" failed.
java.lang.AbstractMethodError: Method clojurescript_build/core/CompilableSourcePaths._find_sources(Ljava/lang/Object;)Ljava/lang/Object; is abstract
 at clojurescript_build.core.CompilableSourcePaths._find_sources (core.clj:-1)

clojure.lang.ExceptionInfo: No such namespace: cljsjs.react, could not locate cljsjs/react.cljs, cljsjs/react.cljc, or Closure namespace "cljsjs.react" {:tag :cljs/analysis-error}

it was working fine with 1.145

I’ll revert to that version

@roberto I assume you also updated fighweel/cljsbuild?

nope

hmmm, I guess I’ll try that. But I can foresee it causing some pain in other projects when ppl upgrade.

I was already in the latest figwheel

upgrading to latest cljsbuild didn’t fix it.

@roberto: I had the same problem, upgrading to lein-figwheel "0.5.0-SNAPSHOT" and lein-cljsbuild "1.1.1-SNAPSHOT" fixed it

ah, crap

I upgraded to latest stable

The release notes mention that latest versions of these tools are required

oh, I didn’t read the release notes

I made a #cljsrn channel to cover ClojureScript + React Native specific issues.

@mfikes cool!

before i upgraded to idea 15, cursive added 'splice sexp' and other structural editing tools to the cmd-shift-a menu. i can't find them anymore, have they moved elsewhere? i updated to the v15 repo and cursive otherwise works fine

@sander: No, they shouldn’t have moved. Can you see them under Edit->Structural Editing?

@cfleming: yes they're still there and they work

@sander: I just tried, and I can’t find them with Cmd-Shift-A either.

Could you file an issue for that and I’ll look at it?

In the meantime, if you don’t want to bind them all to keys, you could try a quick list (Settings->Appearance & Behaviour->Quick lists). You can create one with the structural actions in it and bind a single key to it.

@cfleming: done: https://github.com/cursiveclojure/cursive/issues/1144 ! thanks will try, still can't decide upon nice keys for the splice and join commands which i tend to use a lot

@sander: Thanks! I think the quick list should work pretty well.

@sander: BTW there’s also a #C0744GXCJ channel for these sorts of things.

oops, thought I was in there already