@nullptr: Loved the talk! https://www.youtube.com/watch?v=gsffg5xxFQI

Thanks, it was a lot of fun!

I know which talk I'm sending to a buddy 😛

great talk!

thanks for the link here

why are comments disabled on Conj videos?

Anyone know how to using Static Image Resources in cljs? https://facebook.github.io/react-native/docs/images.html#content

Anyone got slow reloads with latest figwheel ? https://github.com/bhauman/lein-figwheel/issues/264

@ernestas: Tried adding :recompile-dependents false to your :compiler settings?

trying now

works, thanks a lot

Anyone understand how piggieback works? Cemerick projects have incomprehensible documentation. I’m trying to use Emacs CIDER with a cljs nrepl and this is what I was told to use. I can’t help it but I feel like the docs just told me to go fuck myself.

I'm interested in the same. I took a look at the README and put it on the back burner because I didn't understand it.

is there something like spyscope for clojurescript?

@honza I assume you want to get a cljs repl within cider?

I've been able to get that to work with the reagent template

I'll tell you how and then you can pull it apart and see which parts are the parts that you are missing

create a new reagent project with lein new reagent myapp

then in the myapp directory, run lein figwheel

once that's started up, go to "localhost:3449" in your browser

then open the myapp/src/cljs/core.cljs file in Emacs

do a cider connect (C-c M-c) to localhost:7002

Once that's connected run (figwheel-sidecar.repl-api/cljs-repl)

@mrg Thanks! I'll try it out shortly

That method works well for me also.

It's a lot of black magic

but it works. Mostly.

You can do it with vanilla figwheel also by specifying the nrepl-port in the project.clj options for figwheel

figwheel is one awesome piece of software.

yup @jstew

Anyways, I was wondering if anybody knew a good way to accumulate values from a bunch of core.async channels and then push the result out to another channel

say i have channels s1, s2 and s3, which return :a, 😛, and :c respectively

how do I write a function that takes [s1 s2 s3] and returns a channel that will eventually yield [:a 😛 :c] ?

(i can assume that all channels will return just one value. Those are actually webservice calls)

right off the top of my head, you could probably use alt!, add the value to a list, and recur until the number of values is equal to the number of chans you're alting on

there may be a better way, but that's what my intuition gave me

yeah, but that doesn't seem nice, does it?

i tried async/merge and then async/reduce but that didn't work out. I suspect i was using them wrong

actually, nevermind! I was an idiot

I wasn't closing the channels

so reduce didn't finish

(defn get-all []
    (let [s1 (return-stuff :a)
          s2 (return-stuff :b)
          s3 (return-stuff :c)
          stuffs [s1 s2 s3]]
 
      (->> stuffs
           (async/merge)
           (async/reduce conj []))))

This works! Thanks guys, sometimes you really need a rubber duck

@mrg Complaining about nrepl refactor

for me too, and i can't figure out why

it should still work though

are you getting a repl, or is it a show stopper?

lein figwheel works fine, but cider-connect doesn't

what exactly do you do, what does it say, and what doesn't work?

@mrg In the terminal, I run lein figwheel. Then, in Emacs, I open src/cljs/core.cljs and run M-x cider-connect, then interactively select localhost and 7002. I get an error saying that I should install nrepl-refactor. The bottom of the screen says that it’s not connected.

ah, okay. Put these in your ~/.lein/profiles.clj:

[refactor-nrepl "2.0.0-SNAPSHOT"]; helps with refactoring and is a dependency of clj-refactor
            [cider/cider-nrepl "0.10.0-SNAPSHOT"] ; needed for clj-refactor

in the :plugins vector

or if you'd rather try it out local first, put them in the project.clj of your try-out project

I have those but older versions. Let me try it with the ones you specified.

they should match the one cider version you have

when i start the repl, i get

no idea which version i have

> ; CIDER 0.10.0snapshot (package: 20151025.1201) (Java 1.8.0_25, Clojure 1.7.0, nREPL 0.2.12)

you should see something like that too when you start a repl in cider

or easier, just update cider to the newest version from melpa

that one is 0.10.0-snapshot

M-x cider-version

I upgraded everything, still can’t find refactor nrepl. Lol.

just looked around, and it seems that fighweel likes to ignore some leiningen config

but are you certain that under all the warnings there isn't a repl?

i get all the stupid warnings, but ALSO the repl prompt

To be honest, I never use the repl buffer. I just C-c C-c and C-c C-k

well, you might wanna check that

I’m using spacemacs (maybe that makes a difference)

because you have to start the cljs-repl from the repl buffer

there is no repl buffer in the listing

cider-connect doesn't open one?

doesn’t lein figwheel start a cljs-repl?

yes but you want to connect to it from emacs

isn't that the whole point?

cider-connect gives me an error about a missing dependency

an error, not a warning?

What color theme is that? Very nice! #ot.

slightly modified version of spacegray

https://github.com/px0/dotfiles/blob/master/emacs.d/themes/maxi-spacegray-theme.el

Pretty. I have moe-dark but sometimes it's not very readable.

> yes but you want to connect to it from emacs --- isn't that the whole point? Yes. But you said that I need to start the cljs-repl from the repl buffer. Why? It’s already running in my shell.

So confused

i want to keep the stuff in emacs

that way i can eval expressions and can check state and all that

plus that's the way to get jump-to-expression etc working

and for that, you need to jack into the cljs shell

and for that you need the repl buffer

i’m so confused

I'm not sure how to help you there. Sorry, buddy

I think there is a disconnect in my brain about how this whole thing works.

emacs/cider query the repl for all sorts of stuff

"where is that function defined? what's the doc string?"

so if you want those things to work, you need a repl connection within emacs

In my regular Clojure workflow, I start a lein repl and connect to it from Emacs. Then I can compile the current file, and eval an expression with C-c C-k and C-c C-c.

Emacs talks to the repl process started in my shell

that's close to what you need to do, except that the clojure repl needs to connect to the clojurescript repl

or, if i don’t want to bother wih lein repl, i can get emacs to start it for me with cider-jack-in

This is what I get after running lein figwheel in the regeant template.

It seems to start a cljs repl. How do I connect to it from emacs?

M-x cider-connect

and then run (figwheel-sidecar.repl-api/cljs-repl)

the cljs repl isn’t an nrepl by default

I actually don’t know how nrepl works, exactly, but piggieback wraps the cljs repl in an nrepl so that you can use nrepl functions and still connect to your cljs process

figwheel takes an :nrepl-port option

to make it serve nrepl

noticed that cljs stopped to recompile if files changed inside directory linked into source (by ln -s)

it's cljs-build plugin responsibility to perform such watch?

investigating :nrepl-port

what arguments/params do you give to cider-connect?

localhost

7002

ok, i got it to work

this is so dumb

i now have two cljs repls running

hm, maybe not

I don’t understand why I need to start the cljs repl inside of emacs when it’s already running. It doesn’t actually start a new process, it just seems to tell emacs that it exists.

Thanks everyone for you patience and help!

@honza: You can also use inf-clojure to interact with lein figwheel, but then you need to start lein figwheel from inferior-lisp

@honza: I used to do it that way.

I understand some of those words

@honza: steps to reproduce: 1) install inf-clojure package. 2) C-u M-x inferior-lisp RET lein figwheel RET, 3) enable inf-clojure inside your .cljs buffer, and interact you can.

but if you can use nrepl, that's cool too. I'm not sure how that works if you have backend code to interact with too.

it seems like an extern for Element.prototype.closest does not get respected for (.closest e.target ...), anyone else experienced this issue?