@smw Thank you! Glad to hear I am not alone

Great article! Thank you

Why would I get WARNING: no :cljsbuild entry found in project definition. when running lein cljsbuild while I have a :cljsbuild entry in my project, and it does its job?

I’m using pushState and need to keep track of the scroll position of any page in the navigation history. (So that I can restore the scroll position when the user navigates using history.back()and next(). Seems I can add custom state to the history object - http://loganlinn.com/blog/2014/05/26/push-state-and-clojurescript/ - but that makes my SPA to unload and reload from scratch. Not sure if that’s specific to how I have set up routing, but before I start to investigate that I’d thought I could ask you guys if you’ve had this problem? And of course, I’m super curious about how you maintain scroll position in these scenarios!

I'm trying to synthesize the reasons why CLJS package management / build toolchain is preferable to existing JS tooling; if anyone has any input or links to technical discussions of the merits of e.g. maven vs npm, I'd appreciate it

@slotkenov: https://github.com/emezeske/lein-cljsbuild/issues/413

Hey, we don’t have >!! in cljs.core.async?

urbanslug: since javascript is inherently asynchronous, it couldn’t exist because you can’t block in javascript

vs in clojure, it blocks the thread until the data can be put into the channel

Well I don’t know JS at least not much JS

Can I just use >! instead?

yeah, use >! inside go blocks, or use put!

put! can be called outside a go block, but its possible to lose data if the channel isn’t ready for data

matthavener: What I actually want is <!

you almost certainly want a go block then

cljs core match error "#object[TypeError TypeError: Cannot read property 'backtrack' of undefined]" in figwheel repl:

(require '[cljs.core.match :refer-macros [match]])

(let [x true
      y true
      z true]
  (match [x y z]
     [_ false true] 1
     [false true _ ] 2
     [_ _ false] 3
     [_ _ true] 4))

why is this error happens?

hey guys, im looking to transcribe the following js to cljs but I cant seem to figure it out, help would be appreciated!! $('html,body').animate({ scrollTop: element.offset().top }, 'slow');

@edbond: you need to load the runtime support not just the macros

@edbond: the README is wrong, fixing

@dnolen Thanks!

@edbond: hrm actually the README seems right

not sure what’s wrong there - unless that's a REPL session or something

@edbond: what version of ClojureScript are you using?

I would make sure this is with 1.7.228

[org.clojure/clojurescript "1.7.170"] [org.clojure/core.match "0.3.0-alpha4"]

yes, the readme works

what REPL are you using?

but the code I wrote don't. Will try new version

figwheel

yes, 228 works fine.

@dnolen: thanks.

@flyboarder: (-> (js/$ "html,body") (.animate #js {:scrollElement (.-top (.offset element))} "slow")) can be a first approach maybe

:scrollTop instead of :scrollElement

@niwinz @edbond it doesnt seem to like (.offset element)

I only have translated your js to clj, I don't have much context for help more

is element is defined anywhere, maybe is that a problem

fair enough, im basically just trying to implements a smooth scroll to the bottom when content expands

I suggest just not using jquery and start using google closure facilities or maybe some library that wraps it like https://github.com/plumatic/dommy

It there are also https://github.com/ibdknox/jayq jquery wrapper that makes jquery usage in cljs a little bit more idiomatic

Yeah i tried jayq and couldnt really figure it out, im using hoplon right now

dommy is interesting

@flyboarder: this is probably what I would do: https://gist.github.com/oakmac/a54e4e6ddd435173637a

assuming you have access to element in that scope

@chrisoakman: thanks! looks like Hoplon already supports what I was looking for, it’s just not working how I expected 😛

https://github.com/hoplon/hoplon/blob/master/src/hoplon/core.cljs#L554-L559

FWIW probably you want (.-offset element) instead of (.offset element)

Oh shit, (.offset element) is fine... sorry for the noise