I'd use another channel on which I put vectors of the correct length, with an intermediate loop that takes from the first channel, accumulates until the vector has the right size, and then put the vector on the second channel.
There might be a better solution with transducers, though. (Or without.) On Wednesday, 3 September 2014, cig <clifford.goldb...@gmail.com> wrote: > Thanks Timothy, that makes sense. > > A follow on question if you don't mind. > > I would like to 'take' n items off of a channel, but wait until n items > are available rather than eagerly returning the way take does. Do you have > any ideas on how > I could achieve this? > > On Tuesday, 2 September 2014 22:23:10 UTC+2, tbc++ wrote: >> >> It's because into is pulling items as fast as it can from take. Sure the >> buffer might get full but then into takes another value allowing take to >> continue. >> >> Timothy >> >> >> On Tue, Sep 2, 2014 at 1:48 PM, cig <clifford...@gmail.com> wrote: >> >>> Hi >>> >>> I was expecting the following example to park, waiting for the 'out' >>> channel to be cleared. Could anybody explain why 'take' does not >>> park when the output buffer size is smaller than the number of entries >>> being taken from the input channel? >>> >>> (def from (to-chan [1 2 3 4 5 6 7])) >>> (<!! (into [] (take 4 from *2*))) ;; note: the output channel >>> buffer size is 2 (less than 4 items being taken off of the 'from' channel) >>> >>> ;; => [1 2 3 4] >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Clojure" group. >>> To post to this group, send email to clo...@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+u...@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+u...@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 > <javascript:_e(%7B%7D,'cvml','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 > <javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@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 > <javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@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.
