into uses transient and persistent! for speed. The fact that into can take a transient as input is an accidental consequence of that, I think. Before into was changed to use transients internally, it could only take persistent data structures as input, and return a persistent data structure.
Andy On Mar 20, 2012, at 10:32 AM, László Török wrote: > Hi, > > While implementing qsort with clojure for fun, I thought about using > transient vectors to speed up sorting vs the "naive" functional > implementation. > > I need an into! version of into when joining two sorted subarrays and I was > wondering why there isn't one. > > It seems that (source into) does in fact support a transient collection as > the first argument, however it calls persistent! on the result. > > What was the rationale behind the decision? (Note: I'm not questioning it, > just interested.) > Is there a particular reason why this feature remains undocumented? > > -- > László Török > > > -- > 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 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
