Sorry, I was mistaken.
On Tue, Feb 16, 2010 at 12:23 AM, Rich Hickey <richhic...@gmail.com> wrote: > On Mon, Feb 15, 2010 at 8:45 AM, George . <clojuri...@gmail.com> wrote: > > Currently, if you want to perform a range query on a sorted-seq (AKA > > PersistentTreeMap), you are are advised to use the subseq wrapper for > > seqFrom. > > > > For instance, let's say your keys are dollar values you could do (subseq > > my-map > 30) to get all entries with keys greater than 30 or (subseq > my-map > >> 30 < 100) to get all entries with keys that range between 30 and 11. > The > > former case is O(logN) as it is entirely delegated to the logarithmic > > seqFrom method. However, the latter example has worst case O(N) behavior > > since subseq is doing a take-while after .seqFrom. > > > > Is there any plan to support upper bounds directly within seqFrom in > order > > to make the worst-case behavior logarithmic all around? > > > > If not, would such a patch even be considered or is the simplicity of > > implementation an overriding factor? > > > > > > I'm confused. Do you want something other than a seq of values in > range as a result? Because if there are K things in range, there is no > way to consume them in complexity less than O(K). That cost won't be > incurred until you consume them, due to take-while being lazy. > > OTOH, if what you want is a subset or submap, or, from them, a > constant-time count, well, that's a different function altogether. I'm > not opposed to subset or submap proposals. > > Rich > > -- > 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<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 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