This appears to have no effect on the problem. I tested with jdbc/transaction, and with Sean's simple example:
user=> (defn f [g] (g)) #'user/f user=> (defn t1 [n c] (f (fn [] (dorun (map identity c))))) #'user/t1 user=> (t1 0 (range 1000000)) java.lang.OutOfMemoryError: Java heap space (NO_SOURCE_FILE:0) user=> (defn t2 [n c] (f (fn [] (doseq [x c] (identity x))))) #'user/t2 user=> (defn t1 [n c] (f (^:once fn* [] (dorun (map identity c))))) #'user/t1 user=> (t1 0 (range 1000000)) java.lang.OutOfMemoryError: Java heap space (NO_SOURCE_FILE:0) On Wednesday, September 11, 2013 7:39:48 AM UTC-7, Christophe Grand wrote: > > ^:once on fn* (not fn, the fn macro doesn't propagate metadata) instructs > the commielr to clear closed-overs ASAP. It follows that you can't call > such a function twice because it forgets its closed-overs. > > > On Wed, Sep 11, 2013 at 4:36 PM, Brian Craft <craft...@gmail.com<javascript:> > > wrote: > >> ugh. Can't find documentation for this. What does it do? >> >> On Wednesday, September 11, 2013 2:22:56 AM UTC-7, Christophe Grand wrote: >> >>> >>> On Wed, Sep 11, 2013 at 6:00 AM, Brian Craft <craft...@gmail.com> wrote: >>> >>>> (defmacro transaction >>>> [& body] >>>> `(transaction* (fn [] ~@body))) >>>> >>>> I'm not sure how to avoid that. The anonymous function created here >>>> doesn't take parameters. >>>> >>> >>> The fix for this is: >>> (defmacro transaction >>> [& body] >>> `(transaction* (^:once fn* [] ~@body))) >>> >>> It should be the default for all one-shot fns. >>> >>> Christophe >>> >>> -- >>> On Clojure http://clj-me.cgrand.net/ >>> Clojure Programming http://clojurebook.com >>> Training, Consulting & Contracting http://lambdanext.eu/ >>> >> > > > -- > On Clojure http://clj-me.cgrand.net/ > Clojure Programming http://clojurebook.com > Training, Consulting & Contracting http://lambdanext.eu/ > -- -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
