I use update-vals from https://github.com/jaycfields/jry fairly often. As long as you don't mind doing the pred check in the fn you pass to update-vals, it should do the trick.
Cheers, Jay On Fri, Jul 5, 2013 at 5:14 PM, Jim - FooBar(); <jimpil1...@gmail.com>wrote: > You'll never really 'replace' any values so why not reduce/reduce-kv ? > Just build a new map out of the old one... > > Jim > > > On 05/07/13 21:59, Colin Yates wrote: > >> Hi all, >> >> I think this is one of those questions which has quite a few answers, but >> given a map, how do I replace the values by applying a function to those >> values, but only if they meet a condition? >> >> I understand the building blocks of (map..), (filter..), (assoc-in..) and >> (filter..) and I can see how something could work using those pieces but is >> would be pretty verbose. I am sure there is probably a much more simple >> way using a more abstract function. >> >> The actual use case is I have a list of maps as returned from the >> clojure.java.jdbc framework and they contain timestamps. I want to replace >> all the timestamps with (for example) to a Joda LocalDate using the >> excellent clj-time library. >> >> Any pointers? >> >> Thanks! >> >> Col >> -- >> -- >> 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+unsubscribe@**googlegroups.com<clojure%2bunsubscr...@googlegroups.com> >> For more options, visit this group at >> http://groups.google.com/**group/clojure?hl=en<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+unsubscribe@**googlegroups.com<clojure%2bunsubscr...@googlegroups.com> >> . >> For more options, visit >> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >> . >> >> >> > -- > -- > 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+unsubscribe@**googlegroups.com<clojure%2bunsubscr...@googlegroups.com> > For more options, visit this group at > http://groups.google.com/**group/clojure?hl=en<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+unsubscribe@**googlegroups.com<clojure%2bunsubscr...@googlegroups.com> > . > For more options, visit > https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> > . > > > -- -- 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.