2010/2/8 Meikel Brandmeyer <m...@kotka.de>: > Hi, > > On Feb 8, 2:06 pm, Roman Roelofsen <roman.roelof...@googlemail.com> > wrote: > >> Ah, that makes sense, thanks! Is using (gensym) the common solution >> here? So far I thought that (gensym) is more a internal function that >> I normally never need to call directly. > > In such a case using gensym is the normal solution. When you don't > have the "escape" situation, using # is prefered since it removes the > need for a surrounding let just containing gensym's.
There's also just another (rather uncommon ?) situation when one would want to avoid using trailing #: if one wants to create bunchs of code in a loop, where one wants to generate different syms everytime. This does not work since sdfsdf# is generated once and for all at read-time, and not everytime the code will be executed. Example: user=> (map (fn [k] `(println k foo#)) [:a :b :c]) ((clojure.core/println user/k foo__6__auto__) (clojure.core/println user/k foo__6__auto__) (clojure.core/println user/k foo__6__auto__)) user=> (map (fn [k] (let [foo (gensym "foo")] `(println k ~foo))) [:a :b :c]) ((clojure.core/println user/k foo11) (clojure.core/println user/k foo12) (clojure.core/println user/k foo13)) HTH, -- 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
