In addition to mult/tap, if all you need is something that looks like a promise, the newest core.async has "promise channels" which only accept a single put, but that value can be retrieved by many takes.
On Wed, Nov 25, 2015 at 3:21 AM, Moe Aboulkheir <m...@nervous.io> wrote: > > > On Wed, Nov 25, 2015 at 6:42 AM, <fah...@gmail.com> wrote: >> >> So how does one use channels if one is accustomed to registering several >> callbacks to a single event? Do you have an intermediary which takes one >> value from the source channel and then puts the value on as many other >> channels as there are subscribers? >> > > There is a construct specifically for this - mult/tap (create a mult of > the source channel/s, tap the relevant ones onto a channel per listener). > The pub/sub functions can also be used, if there is more complicated > dispatching logic. Further, if the events aren't coming in streams (i.e. > one event per channel), the most recent release of core.async includes a > promise-chan function, which supports single write, multiple read. mult > sounds like the right way to go, though. > > >> And as for hooking up a single function to more than one channel, is that >> where you'd use alts! ? But does that mean you have to know all the >> channels you're interested in vs having the freedom to take the same >> function and have it take from any additional channel? >> > > If each the consumers has their own channel, you don't need to know within > the consumer about the details of where the events are coming from. > > Take care, > Moe > > -- > 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 - 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.
