As I see, dispatch-n is a doseq dispatch. How about side effects? Do it control concurency at ALL?

@fabrao can you explain your question further? re-frame processes events in the order they are received, and runs all fx synchronously (of course an fx can itself make an async action)

dispatch-n itself is only dispatching the events onto the re-frame queue

@feihong.hsu can you share a snippet that shows what you're doing in your click handler and what you're doing in your effect handler?

@seako click handler: https://github.com/feihong/re-frame-quickstart/blob/master/src/cljs/quickstart/views.cljs#L105 effect handler: https://github.com/feihong/re-frame-quickstart/blob/master/src/cljs/quickstart/events.cljs#L130

@seako i also tried creating a much simpler project to try to isolate the problem, but unfortunately, everything works fine. so there is something else going on.

https://github.com/feihong/web-speech-quickstart/blob/master/src/cljs/demo/views.cljs

@feihong.hsu Sorry for not addressing the question you're actually asking (not very familiar with the speechSynthesis api), but regarding your comment ; Is there a way to turn this into a pure function? in your code: The answer is reg-fx https://github.com/Day8/re-frame/blob/master/docs/Effects.md#extensible-side-effects

It is really a weird question, but has anyone experienced a subscription constantly returning a #<Reaction : nil> at the cljs-repl?

Even though it seems like all the components subscribing to it see some contents

> Improve cache eviction behaviour of subscription caches. In more complex applications a subscription may have been unnecessarily created and destroyed several times after a Figwheel re-render.

I did find the line above in the changelog so I upgraded re-frame but issue still seems to persist...

subscriptions do, indeed, return a reaction.

Stick a @ in front to obtain the value

Sorry, should have mentioned that returns nil

which makes me :thinking_face:

(after sticking an @)

I wonder if re-frame-10x would help you to figure out what's happening

You can look at subs tab

Sounds like the right occasion to finally check it out 🙂

Yeah, I'm not sure of your intent in looking at a subscription at the repl

If you simply want to see what value it currently has, then re-frame-10x is what you neeed

Yep. Inspection is exactly what I need

was my habit to doit at the repl

running subscriptions in the repl is very helpful though...I wouldn't dismiss the idea 🙂

if you js/console.log the result of a subscription and you have cljs-devtools installed/enabled, you can interactively explore the data in the console btw

(of course re-frame-10x solves all of that but...)

yeah, I have all those goodies and fine there

Only at the repl is where the value is nil

I will move on with life with those tools for now. Thanks!

Just installed re-frame-10x and love the first impression!

I did have to disable it after finding that it somehow makes the React components stop working in weird ways, but good stuff non the less!

@iku000888 I'd be keen to get a more specific bug report for any problems you encountered

@iku000888 which version of react are you using?

Hi @danielcompton The specific project was "react-dom": "15.5.4"

and the thing that stopped working was http://blueprintjs.com/docs/v1/#datetime/daterangeinput

@iku000888 so just to be clear, you are saying that this React component stopped working when you inistalled re-frame-10x or it stopped working when you started tracing with re-frame-10x? And when you say it stopped working, can you be more specific? What should we look for?

Thanks for your patience. installing(regardless of tracing/not) re-frame-10x itself caused the react component under question to stop working

and by stop working, I mean I cannot get rid of the pop out once visible

and yeah I would love to give a nice isolated repro but this project uses a rather non trivial set up with webpack etc...

Do you mean that when you just added the dependency it stopped working?

yes

well

Also did you follow https://github.com/Day8/re-frame-10x#important-prerequisites?

added the pre-load config and closure-defines

> You must be running with the Closure define goog.DEBUG as false

true no?

yep

my mistake

just fixed docs

but yeah prerequisites are followed and can confirm tracing works via ctrl+h

> and by stop working, I mean I cannot get rid of the pop out once visible Which popout? the re-frame-10x panel or your date one?

date one