By definition, persistent data structures are never mutable. But there are various kinds of mutable references (vars, refs, atoms, agents) that can _refer_ to persistent (hence unchanging) data structures.
While David has given you an answer to your immediate query, I would ask you to step back and consider whether you're sure you really need references. You haven't supplied enough context for us to make that call. -Per On Tue, Mar 23, 2010 at 8:35 PM, WoodHacker <ramsa...@comcast.net> wrote: > I understand how conj works. But how do you add a value to a > persistent vector? You have to add the new item to the vector with > (conj vector item), but how do you assign the return value to the > persistent vector. So far I have it working with a def -- (def > vector (conj vector item)) -- but I'm not sure this is 'pure' > Clojure. Is there a better way, functionally, or am I there? > Functional programming is the best way to go, but very few programs > can exist without mutable persistent data. > > Bill > > -- > 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 > > To unsubscribe from this group, send email to > clojure+unsubscribegooglegroups.com or reply to this email with the words > "REMOVE ME" as the subject. > -- 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 To unsubscribe from this group, send email to clojure+unsubscribegooglegroups.com or reply to this email with the words "REMOVE ME" as the subject.
