To be explicit, the doall needs to be before the call to recur (that
is, it affects the map).  Is that  right?

On Oct 5, 1:31 am, Meikel Brandmeyer <m...@kotka.de> wrote:
> Hi,
>
> On Oct 5, 9:50 am, Volkan YAZICI <volkan.yaz...@gmail.com> wrote:
>
> > > (defn leak []
> > >   (loop [v [0 0]]
> > >     (recur (map + v [1 1]))))
>
> > > Adding a doall call fixed the leak.
>
> > Could you please provide a more concrete (if possible working) example?
> > I'm trying to figure out the actual reason of the problem, and there are
> > still some missing parts in the maze.
>
> map is lazy and hence has to store a reference to the original
> sequence, which is released when realising the map sequence. The loop
> builds up a stack of maps which each keeps references in their guts.
> So the memory builds up and up and up and *BOOM*. The doall realises
> the sequence and hence the reference to the input sequence can be
> dropped. It gets GC'd and everything is fine.
>
> Sincerely
> Meikel
--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---

Reply via email to