On: ClojureScript

[andrewvc]

I'm wondering if this has the refs, agents, and atoms that make concurrent clojure so awesome. If not, it would feel.... strange.

[lukev → andrewvc]

Atoms are there. The others are not, but they would be pretty much meaningless in a Javascript engine anyway, since Javascript is specified to be single threaded.

[azakai → lukev]

JavaScript does have Web Workers, though, which are threads/processes.

They have no shared state though, not sure if that is a problem in this case or not.

[runevault → andrewvc]

The impression I got is the core syntax is all there, you just don't get access to the jvm libraries anymore.

[fogus → runevault]

All of the core syntax is not currently there, but you're right that ClojureScript only interops with js and not Java. For a more detailed differences list see https://github.com/clojure/clojurescript/wiki/Differences-fr...

[fogus → fogus]

Bear in mind that the wording is very careful. We took great pains to say things like "not currently implemented." ;-)

[SomeIdiot → fogus]

"ClojureScript does not currently support regular expression literals using #"" "

This one seems like a big deal, given how often I find myself using regexes in clojure. Is it on its way and is there a workaround currently?

[ericmoritz → SomeIdiot]

I'm sure you can use the native RegExp class:

    (def pat (RegExp. "Some(.+)"))

[abp → SomeIdiot]

There you go:

https://github.com/clojure/clojurescript/commit/a201e9d8dec8...

[runevault → fogus]

No STM, that'll be interesting.

Ack no transients either! I know it's early but not gonna lie that one makes me sad. I love being able to write stupid fast list/map builder functions that bash inline but then return something nice and immutable.

[fogus → andrewvc]

Atoms are available now. Agents might come soon. Refs and Vars are questionable.

[technomancy → fogus]

> Vars are questionable.

Really? Without vars you don't even have defn. Or do you just mean that vars in clojurescript don't implement IRef?

[nickik → technomancy]

I think stuff like defn is just a normal js function and does not have the semantics of a clojure var.

[SergeyHack → andrewvc]

IIRC just atoms are available right now.

[mattdeboard → andrewvc]

No agents yet