Hi. Is it possible to ​synchronize​ AJAX request with core.async somehow (taking into account <!! doesn't exist in CLJS)?

@andrewboltachev: what do you mean by synchronize? you can use a promise chan and put the XMLHttpRequest result to it, and work with that in a go block

I mean to have function like (defn return-data-from-resource [url] ) which returns data when it arrives

@andrewboltachev: not directly in cljs, but you can make it return a (promise) chan that you can process synchronously from within a go block

I just remember I've seen sth like that

May be not, of course

Well, I'll try to think up a solution

@andrewboltachev: you can use the synchronous xmlhttprequest api, but can't recommend that. otherwise, there's no way to do things that couldn't be done in javascript, go just rewrites your code so that you can reason about it like it's synchronous

yep I understand. in fact, in my task I would be invoking callback anyway (but I need to ditch few items in a row). I believe I might find a solution with core.async. Thanks @sander

I'm doing something just a bit odd: I want to do somelike like an alt! or alts!, but I have one fixed channel where I do operation A when I get value, and then some number of other channels (that change over time) wher I do operation B.

Hm. I guess I could use the new poll! function.

But less than ideal, as I have to distinguish between "closed" and "nothing ready".