All~ My clojure is fairly weak, but the particular example given would be accomplished in common lisp using generic methods and the :around modifier...
http://www.aiai.ed.ac.uk/~jeff/clos-guide.html <http://www.aiai.ed.ac.uk/~jeff/clos-guide.html>Matt On Wed, Sep 15, 2010 at 2:26 PM, Alan <a...@malloys.org> wrote: > My guess is no. It would remove a huge benefit of Clojure, which is > that you can tell, without having to look over the whole codebase, > exactly what a given form does. (my-thing 20 [x y]) invokes my-thing, > a function or macro, with 20 as its first argument, and then a vector > of locals. No need to hunt down x and y, they're in the lexical scope; > no need to guess at the syntax for my-thing. If you can have magical > functions that transparently adjust forms all over the codebase, it > becomes extremely difficult to be sure of what some code is doing, > even without "abuse". > > Also, metamacros would be very hard to write *right*. Two of them > might compete over a chunk of code, accidentally falling into infinite > co-recursion. Layering them would be very tricky, too: do you apply > them before or after regular macros? If you try to do both you may end > up compiling forever, alternating between different types of macro > expansions. But suppose you want to write your logging function to > modify all function definitions, and someone has written this code: > (def call-listish (fn [fn elem] (fn [elem] 10))) > > How on earth will you know that the first instance of (fn [x] y) is a > function declaration, and the second isn't? > > On Sep 15, 11:03 am, Luke VanderHart <luke.vanderh...@gmail.com> > wrote: > > Any thoughts? I grant you, the potential for abuse is huge. Would the > > benefits outweigh it? > > > > Thanks, > > -Luke V. > > -- > 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<clojure%2bunsubscr...@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 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
