You could use clojure.algo.generic.functor.fmap: (fmap #(if (pred? %) replacement-value %) your-map).
On Fri, Jul 5, 2013 at 2:08 PM, John Walker <[email protected]> wrote: > I had to do something similar, and used > clojure.walk.<http://clojuredocs.org/clojure_core/clojure.walk/walk> > > On Friday, July 5, 2013 8:59:54 PM UTC, 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 [email protected] > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > [email protected] > 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 [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- Ben Wolfson "Human kind has used its intelligence to vary the flavour of drinks, which may be sweet, aromatic, fermented or spirit-based. ... Family and social life also offer numerous other occasions to consume drinks for pleasure." [Larousse, "Drink" entry] -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to [email protected] Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to [email protected] 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 [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
