That works, thanks! Yeah, I understand that it is not the best data structure to use. The task is to create a tree, and it is needed to get all children and all parents of specified node in this tree in a constant time. So, I cannot see another way to do it except storing refs both from parents to children and from children to parents.
On Oct 14, 12:40 am, Laurent PETIT <laurent.pe...@gmail.com> wrote: > You can add a :type metadata to your maps, and this can be catched by the > (type) method of multimethods. > > But if you have parent -> child -> parent -> child ... relationships, I > guess that you're building a tree made of mixins of maps and refs to maps > ... and indeed this should bell some rings in your head if you haven't > already carefully balanced alternative choices ... > > 2010/10/13 andrei <andrei.zhabin...@gmail.com> > > > How can I override print-method for a map, defined with defstruct? > > > I have to create object hierarchy: one map is a parent for another, > > i.e. it holds link to a child, and another is a child for the first > > one, i.e. holds link to a parent. When I try to print it, I get > > StackOverflowError since printer tries recursively print objects: > > > parent -> child -> parent -> child -> .... > > > The best solution I see is to override print-method or str, so the > > printing will go normally. I found this topic: > > >http://groups.google.com/group/clojure/browse_thread/thread/4a675222f... > > > which shows how to override print-method for objects defined by > > deftype, but is there a way to do same trick for maps? Maybe it is > > possible to add some special tag to object's meta? Or to redefine > > print-method in the only namespace? > > > Or maybe I'm just looking at the wrong direction? > > > -- > > 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
