So it looks like this might be perfect for what I need. I need to track a hash of the key fields of inserted db records so I can skip duplicates without db access.
On Thursday, February 14, 2013 7:35:20 PM UTC-5, Luc wrote: > Look at the first example here: > > http://clojuredocs.org/clojure_core/clojure.core/transient > > It should inspire you. > > Transient structures make this kind of loop run faster but as you lay out > your first iteration just toss this aside (and the xxx! version of conj > and cie). > > Luc P. > > > > I have a loop over a function that is accumulating a list of database > keys > > for later use. But it is primarily doing other processing and returning > a > > collection of processed/filtered records. I'd normally just PUSH the > ids > > and records onto a list in Common Lisp, or even LOOP... COLLECT into 2 > > lists. In the Clojure way, how would I build this auxiliary list > without > > using a mutable collection? Would it make sense to return a map or some > > other structure from the processing function that would contain both the > > processed record as well as any id of interest? I could accumulate this > > result, then filter the map into 2 collections - one of processed > records > > and the other a subset of id's of interest. But that seems kludgy > > commingling the results like that. > > > > -- > > -- > > You received this message because you are subscribed to the Google > > Groups "Clojure" group. > > To post to this group, send email to clo...@googlegroups.com<javascript:> > > Note that posts from new members are moderated - please be patient with > your first post. > > To unsubscribe from this group, send email to > > clojure+u...@googlegroups.com <javascript:> > > 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+u...@googlegroups.com <javascript:>. > > For more options, visit https://groups.google.com/groups/opt_out. > > > > > > > -- > Softaddicts<lprefo...@softaddicts.ca <javascript:>> sent by ibisMail from > my ipad! > -- -- 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.
