@tkjone use like this

(def speech (new (.-webkitSpeechRecognition js/window)))
...
(defn apresentar-mensagem [mensagem]
  (log mensagem))

(defn- apresentar-resultados [resultados]
  (let [indice (.-resultIndex resultados)
        mensagem (.-transcript (aget (.-results resultados) indice 0))
        mensagem-ant (.-transcript (aget (.-results resultados) 0 0))]
    (if (not (and (= 1 indice) (= mensagem-ant mensagem)))
      (apresentar-mensagem (clojure.string/trim mensagem)))))

...
;; configure in your main
    (set! (.-continuous speech) true)
    (set! (.-lang speech) "pt-BR")
    (set! (.-onresult speech) #(apresentar-resultados %))
...

Hello all I use this

:npm-deps {"react-md" "1.2.4"}
                    :install-deps true

hello. can someone enlighten me what does -> mean in this context please?

counter/->Controller

@bravilogy it's like the word to. e.g. toController

its just a normal function, no special meaning

naming convention

oh, is it a part of the function name?

yes

yes

damn 😄

thank you haha

I was looking through docs and couldn’t find anything useful. now I see why

that’s amazing

so useful for functions where I’m converting something to something else

@bravilogy Notable: When you define a record like so: (defrecord Controller [a b]) a function that constructs the record is created with the name ->Controller

thanks 👍

there is also (map->Controller {:a 1 :b 2})

@bravilogy means our friend keechma https://keechma.com/annotated/counter/

yes 🙂

I’m looking into that framework at the moment

Does anybody have an answer to this SO question: https://stackoverflow.com/questions/28481272/clojurescript-error-could-not-find-or-load-main-class-clojure-main Tooling has been killing me with kindness 😬, so I decided to give the ClojureScript quickstart a shot. The question has been viewed 1.7k times so I guess a lot of people have been hitting the issue.

@mohamedhayibor I do recommend using a tool to get started. try https://github.com/shadow-cljs/quickstart-browser or https://github.com/bhauman/lein-figwheel/wiki/Quick-Start. the official quick-start guide is rather low-level.

I don’t think anybody seriously uses the cljsc command. I actually forgot it exists at all.

Thanks @thheller I got some luck "running figwheel on cursive" with re-frame's template but recently hit an issue where new dom elements were not being pushed to the browser. I thought that I had fundamental misunderstanding on tooling/setting, reasons of me circling back around to the basics. I'll dig around 😃

ah ok, thought you were just getting started. the basics don’t cover live-reloading so you’ll probably need to dig into #re-frame #reagent.

I just noticed that empty string is truthy in clojurescript but falsy in clojure. Has it always been like this? I'm a little surprised

it isn’t falsy in clojure?

Sorry, I edited my message, it's the other way around

in javascript, empty strings are falsy

not in CLJS

ah, never mind then

[8:0]~shadow.user=> (if "" :truthy :falsy)
:truthy
[10:1]~cljs.user=> (if "" :truthy :falsy)
:truthy

clj+cljs

huh, interesting. Looks like I had a buggy version of planck

thanks

@frerom You had a version Planck where "" is falsey?

does anyone know of a good way to determine why the production build size for a cljs project is so large? like something that tells me how much JS is coming from which namespace?

@currentoor I’ve used source-map-explorer successfully before

https://github.com/danvk/source-map-explorer

thanks @anmonteiro, did you have to do anything special to make it work with the advanced compilation output of a cljs project?

no

it won’t report the exact size of your bundle if you have foreign libs

simply because they’re usually not source mapped

i see

so im guessing i have to have source maps on for this to work?

Error: An error occurred while trying to read the map file at /Users/karantoor/src/adstage-report-center/resources/public/js/intl-messageformat-with-locales.min.js.map

yes, you need to feed it source maps

got it, thanks

it works!

the answer to this might be 'no, don't do that" when trying to write fast numeric code in CLJ, we have primtive-math when trying to write fast numeric code in CLJS -- is there anything to use ?

@qqq sometimes you get numeric optimizations for free from modern VMs (thinking of https://youtu.be/LopU-kMpe8I)