Janko, It's a little hard to see exactly, but you might want to have a quick glance at the docs for, "with-redefs" in the core library. This will give you a slightly more structured way to redefine vars with actual scoping, even if that scope is your entire app it might be a more controlled approach.
On Saturday, 19 January 2019 22:15:43 UTC, Janko Muzykant wrote: > > Awsome! This is exactly what I was looking for :) > > Thanks James and thanks everyone for other suggestions. > > > On Saturday, January 19, 2019 at 5:20:06 PM UTC+1, James Reeves wrote: >> >> Yes, the alter-var-root function allows you to change a var's definition: >> >> (alter-var-root >> #'fetch-data >> (fn [original-fetch-data] >> (fn [& args] >> (let [result (apply original-fetch-data args)] >> (transform-result result)))))) >> >> On Sat, 19 Jan 2019 at 14:58, Janko Muzykant <umr...@gmail.com> wrote: >> >>> Hi, >>> >>> Is there an way to replace body of existing (interned) function with own >>> code still being able to call original fn? >>> Suppose, I have a function: >>> >>> (defn fetch-data [arg1 arg2] >>> (db/fetch-data ...)) >>> >>> I would like to intern a slightly modified version of this fn. Something >>> like this: >>> >>> (defn fetch-data [& args] >>> (let [result (apply original-fetch-data args)] >>> (transform-result result))) >>> >>> The problem I see is how to keep the reference to original fetch-data fn >>> (here denoted by original-fetch-data), >>> so it could be still called in a altered version of fetch-data function. >>> >>> Best, >>> JM. >>> >>> >>> >>> -- >>> 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 >>> 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 >>> 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. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> -- >> James Reeves >> booleanknot.com >> > -- 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/d/optout.
