I only bound it to a var to be clear; the intent was that it would be called directly for the first arg to apply, thus (memfn divide x) may end up being fewer chars and more informational than #(.divide %1 %2). But yeah, not a huge thing. It very well may precede the .prefix notation.
On Feb 5, 6:44 pm, nchubrich <nicholas.chubr...@gmail.com> wrote: > Is there ever any reason to use memfn as opposed to ordinary > functions, i.e. > > (def div (fn [x y] (.divide x y))) > > On Feb 5, 4:20 pm, ataggart <alex.tagg...@gmail.com> wrote: > > > > > On Feb 5, 12:34 pm, Nicolas Buduroi <nbudu...@gmail.com> wrote: > > > > Hi, I'm searching for a way of applying a sequence of arguments to a > > > Java method, but haven't found anything yet. Tried to write a macro > > > for it and don't even see how that would be possible. Is there a way > > > to do that? > > > > Thanks > > > > - budu > > > You could also use memfn. > > > user=> (def div (memfn divide val)) > > #'user/div > > user=> (def x (BigInteger. "6")) > > #'user/x > > user=> (def y (BigInteger. "2")) > > #'user/y > > user=> (div x y) > > 3 > > user=> (apply div [x y]) > > 3 > > > Though it requires reflection. To deal with that you could make your > > own type-hinted function: > > > user=> (defn div [#^BigInteger x #^BigInteger y] (.divide x > > y)) > > #'user/div > > user=> (apply div [x y]) > > 3 -- 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
