As David said, binding preservation works with Clojure, not with ClojureScript. That being said, while I can see a use for bindings in Clojure (thread-local redef), I fail to see a use-case for binding in ClojureScript. Seems like code could/should be structured in a better way.
On Thu, Sep 5, 2013 at 7:54 AM, Jacek Lach <jacek.k.l...@googlemail.com>wrote: > That is not what happens in lein repl: > > user=> (use 'clojure.core.async) > nil > user=> (def pingc (chan)) > #'user/pingc > user=> (def ^:dynamic *text* "OUPS BAD ASYNC") > #'user/*text* > user=> (binding [*text* "good boy"] > #_=> (go (while true > #_=> (<! pingc) > #_=> (println *text*)))) > #<ManyToManyChannel > clojure.core.async.impl.channels.ManyToManyChannel@79d236c2> > user=> (defn ping [] (put! pingc :ping)) > #'user/ping > user=> (ping) > good boy > nil > > It's of course up to core.async to preserve bindings within its body. But > since it tries to pretend to run your `go` code 'as if it was synchronous', > that's probably desirable? > > > On Thursday, September 5, 2013 3:48:10 PM UTC+1, Meikel Brandmeyer > (kotarak) wrote: >> >> Hi, >> >> Am Donnerstag, 5. September 2013 16:36:37 UTC+2 schrieb Mathias Picker: >>> >>> I just tried this test case (from Anderkent on IRC): >>> >>> (def pingc (chan)) >>> >>> (def ^:dynamic *text* "OUPS BAD ASYNC") >>> >>> (binding [*text* "good boy"] >>> (go (while true >>> (<! pingc) >>> (js/alert *text*)))) >>> >>> (defn ping [] >>> (put! pingc :ping)) >>> >>> (ping) >>> >>> and I get "OUPS BAD ASYNC". >>> >>> So, is this bug in cljs core.async? >>> >>> >> This is to be expected, because the binding is reverted after the go call >> returns. So the code in the go block (executed later on) sees the old, >> initial binding. >> >> Meikel >> >> > -- > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- “One of the main causes of the fall of the Roman Empire was that–lacking zero–they had no way to indicate successful termination of their C programs.” (Robert Firth) -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
