I'd also caution against attempting to use >! and <! deep inside a call chain. Send and receive are side-effects. Any function that contains them is impure. Keep IO at the edges, and your whole system will be much easier to test.
Timothy On Wed, Apr 9, 2014 at 6:07 AM, t x <txrev...@gmail.com> wrote: > For the purposes of building a webos: > > Having yield + co-routines gives me cooperative multi-threading -- > which is basically all I need. > > > The main difference between co-routines and go-routines. Is that for > (go ... ) blocks, the <! and >! must be lexically embedded within the > block; whereas with co-routines, the send/receive can be called in > functions I call. > > > On Wed, Apr 9, 2014 at 1:11 AM, Moritz Ulrich <mor...@tarn-vedra.de> > wrote: > > What on this page would solve your problem? I just see > > Generators/Iterators, Array Comprehensions, lexical let and > > destructuring assignment. > > > > On Wed, Apr 9, 2014 at 9:39 AM, t x <txrev...@gmail.com> wrote: > >> I believe > https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/1.7 > >> suffices. > >> > >> However, it's currently Firefox only and no Chrome. > >> > >> On Tue, Apr 8, 2014 at 8:51 PM, Timothy Baldridge <tbaldri...@gmail.com> > wrote: > >>> What is going to fulfill a promise? How will you know when a promise is > >>> fulfilled. In a single threaded VM like JS you're stuck with callbacks. > >>> Nothing short of full program transformation will give you any better > >>> experience than core.async. > >>> > >>> A good way to look at it is this...if you do this in ClojureScript what > >>> javascript is this supposed to execute? > >>> > >>> (deref (promise)) > >>> > >>> The only way this can work is with a code transform like go. Perhaps > someday > >>> a new version of JS will arise that presents a different solution, but > until > >>> then core.async is the best you're going to get. > >>> > >>> Timothy > >>> > >>> > >>> On Tue, Apr 8, 2014 at 3:11 PM, t x <txrev...@gmail.com> wrote: > >>>> > >>>> I'm guilty of the X-Y problem. > >>>> > >>>> > >>>> I'm trying to, inside of CLJS, write a simple WebOS. > >>>> > >>>> > >>>> So I want to simultaneously be able to run things like: > >>>> * a notepad app > >>>> * an IRC app > >>>> * a webRTC video chat app > >>>> > >>>> > >>>> I have built each of these individual pieces in CLJS, -- but combining > >>>> them / having them work well together in a clean, non-spaghetti way is > >>>> harder than I thought. > >>>> > >>>> > >>>> > >>>> ### The main problems here I have are: > >>>> > >>>> * multi-threading (run all three apps at once) and > >>>> * have is inter-"process" (in this case app) communication > >>>> > >>>> > >>>> I'd also prefer to do this in a way where I write each app as if it's > >>>> the only app running (i.e. no callback hell.) > >>>> > >>>> > >>>> One possible approach is to make each app a "go-thread", but then I > >>>> run into the issue of: > >>>> > >>>> (go ... (>! ... ) (<! ... )) all forced into the same lexical > function. > >>>> > >>>> > >>>> > >>>> I'm looking for alternatives to this. By using: > >>>> > >>>> settimeout(func, 0); I should be able to fire off 3 threads > >>>> > >>>> now, if I had something like promises, I can do inter-process > >>>> communication > >>>> > >>>> > >>>> > >>>> I'm still working this through -- so if my thinking is sloppy / > >>>> unclear, please point it out so I can make it clearer. > >>>> > >>>> > >>>> Thanks! > >>>> > >>>> On Tue, Apr 8, 2014 at 2:05 PM, James Reeves <ja...@booleanknot.com> > >>>> wrote: > >>>> > What exactly are you trying to do? Could you describe the problem > you're > >>>> > trying to solve in more detail? > >>>> > > >>>> > - James > >>>> > > >>>> > > >>>> > On 8 April 2014 22:02, t x <txrev...@gmail.com> wrote: > >>>> >> > >>>> >> I'd really like to avoid callbacks. :-) > >>>> >> > >>>> >> If cljs had promises, it would suffice. :-) > >>>> >> > >>>> >> On Tue, Apr 8, 2014 at 2:00 PM, Gary Trakhman < > gary.trakh...@gmail.com> > >>>> >> wrote: > >>>> >> > I think you might be able to use put! with a callback, or (go (>! > >>>> >> > ..)) > >>>> >> > within foo for a transient go process. Not sure if there's any > ill > >>>> >> > effects. > >>>> >> > > >>>> >> > > >>>> >> > On Tue, Apr 8, 2014 at 4:51 PM, t x <txrev...@gmail.com> wrote: > >>>> >> >> > >>>> >> >> Hi, > >>>> >> >> > >>>> >> >> > >>>> >> >> * I am aware of core.async. However, I don't like the fact > that > >>>> >> >> (go > >>>> >> >> ... ) is a macro, thus forcing the >! and <! to appear "in the > >>>> >> >> body", > >>>> >> >> and I can't do nested things like: > >>>> >> >> > >>>> >> >> (defn foo [chan] > >>>> >> >> (let [x (<! chan)] ... )) > >>>> >> >> > >>>> >> >> (go ... (foo ... )) > >>>> >> >> > >>>> >> >> > >>>> >> >> * For the following, I only need it to work in ClojureScript. > I > >>>> >> >> don't need it to work in Clojure. Furthermore, we can assume > browser > >>>> >> >> = > >>>> >> >> latest Firefox, or browser = latest Chrome. > >>>> >> >> > >>>> >> >> > >>>> >> >> Now, my question: is there a library which provides "true" > >>>> >> >> lightweight Clojurescript threads? > >>>> >> >> > >>>> >> >> > >>>> >> >> Thanks! > >>>> >> >> > >>>> >> >> -- > >>>> >> >> 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/d/optout. > >>>> >> > > >>>> >> > > >>>> >> > -- > >>>> >> > 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/d/optout. > >>>> >> > >>>> >> -- > >>>> >> 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/d/optout. > >>>> > > >>>> > > >>>> > -- > >>>> > 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/d/optout. > >>>> > >>>> -- > >>>> 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/d/optout. > >>> > >>> > >>> > >>> > >>> -- > >>> "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 - 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(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/d/optout.
