Hi, Am 07.12.2008 um 09:55 schrieb [EMAIL PROTECTED]:
This solution worked for me and you can see my patch at the following url.http://paste.lisp.org/display/71744
This is of course no solution to the problem, but if you don't want to start patching Clojure you can have a workaround for seqs: (reduce (fn [x _] (inc x)) 0 the-seq).
Keep in mind I just whipped this up to test Chouser's idea. I'm completely new to the Clojure code base so this is a naive fix at best. I noticed that quite a few classes seem to fall under the IPersistentCollection umbrella so I'm sure the real patch is bigger than this. Also the array only needs to be of size 1, obviously.
I'm not sure, that this is a general problem. Vectors, maps, sets and lists have all an O(1) count. So I presume the have this stored in some instance variable somewhere. For general seqs however, this is not true. Eg. a line seq doesn't know the number of lines in advance. A seq originating from a collection however, could provide also an O(1) count. Or am I mistaken? Sincerely Meikel
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