2009/7/17 Chouser <chou...@gmail.com> > > On Fri, Jul 17, 2009 at 11:21 AM, Mark > Addleman<mark_addle...@bigfoot.com> wrote: > > > > On Jul 17, 2:35 am, Nicolas Oury <nicolas.o...@gmail.com> wrote: > >> Hello, > >> > >> Can this construct handle higher-order functions? > > > > Nope :) > > > > Chouser brought up this point in IRC. It's not even clear what the > > syntax would look like. > > I suppose you could provide named-arg-aware high order > functions with their own syntax. > > (named-map subtract :from (range 0 30 3) :take (range 10)) > > But you'd need everything -- filter, reduce, etc... > > There is something that can be done to make a normal call > look more ... normal. That is, instead of: > > (named-call subtract :from 10 :take 2) > > you'd prefer: > > (subtract :from 10 :take 2) > > Well, that's just a matter of writing a defn-named-args > macro: > > (defn-named-args subtract [from take] (- from take)) > > Which would expand to something like: > > (do > (defn subtract-func [from take] (- from take)) > (defmacro subtract [& args] > `(named-call subtract-func ~...@args))) > > This actually came up in IRC too. :-) Note it builds > directly on the named-call macro you've already got. Also > note that it enforces the inability to use this 'subtract' > in high order functions because it's now a macro. >
Hi, though interesting, I sincerely think all this becomes a little bit too complicated ... or maybe not general enough (starting to have to treat "callable with named args" functions as second class citizens is a bad smell and, maybe, not a good start in life for them ?) Regards, -- Laurent --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
