2009/6/13 James Reeves <weavejes...@googlemail.com>: > > On Jun 13, 9:39 pm, Laurent PETIT <laurent.pe...@gmail.com> wrote: >> Well, the array is iterated once by map, the new seq created by map is >> iterated once by filter, and the new seq created by filter is iterated >> once by count, so right, I should have written : 3 walks of seqs of >> the size of the array. > > The filter and map functions produce lazy seqs, so the sequence is > only walked once.
Well, isn't walking 3 different sequences 1 time almost equivalent (in terms of computer work) to walking 3 times one sequence ? And nevertheless, if I insist, it's not really because there *could* be a performance problem (though I guess there will, but only benchmark would tell), but rather because the essence of the problem seems to be needing a simple reduction with early break capability, and no more :-) > > - James > > > -- Cordialement, Laurent PETIT --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
