On Fri, Aug 12, 2011 at 10:17 AM, Stuart Sierra <the.stuart.sie...@gmail.com> wrote: >> Yes. The compiler probably optimized away the var lookup to an >> embedded constant. You'll need to use an atom, as Baldridge suggested. > > The Clojure compiler doesn't optimize anything away. However, in a situation > like this: > > (defn foo [x y] ...) > > (def bar (partial foo 1)) > > The binding of `foo` is resolved when `bar` is defined, and never again > thereafter. Changing the root binding of `foo` in this case would have no > effect on `bar`.
That is what I meant, and from what I've heard, in 1.3 this behavior extends to defn if the Var isn't defined with :dynamic true, that is, (defn bar [x] (foo x)) will use a "baked-in" value of foo rather than do a dynamic Var lookup. That's faster, but doesn't allow dynamic binding to work, and presumably not alter-var-root either. -- Protege: What is this seething mass of parentheses?! Master: Your father's Lisp REPL. This is the language of a true hacker. Not as clumsy or random as C++; a language for a more civilized age. -- 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
