Hi Mark, Here's a brief doc on special forms: http://clojure-doc.org/articles/language/macros.html#special-forms-in-detail
Thanks, Ambrose On Wed, Jun 18, 2014 at 12:13 PM, Mark P <pierh...@gmail.com> wrote: > Thanks Tassilo for the explanation - much appreciated! > > I have been searching the web and searching clojure text books for the > last two hours trying to find the answer to this same question. Finally I > stumbled onto this thread! > > I realize that hiding the complexity of distinctions between fn / fn* and > let / let* etc might make the documentation more accessible for some users, > but for others (like me and presumably also Plínio) it makes it really hard > to track down what is *really* going on. I wish this distinction was part > of the formal documentation. > > Does anyone know of documentation anywhere that does include these kinds > of distinction? > > Thanks, > > Mark. > > On Thursday, 6 March 2014 02:27:26 UTC+10:30, Tassilo Horn wrote: > >> Plínio Balduino <pbal...@gmail.com> writes: >> >> Hi Plínio, >> >> > Clojure.org says fn and let are special forms, but using the macro >> > sourceshows that both are macros calling fn* and let* respectivelly. >> > >> > So fn and let are "special special forms", or clojure.org is >> > incorrect/outdated? >> >> Well, they are correct from a user's point of view. One never uses the >> real special forms fn* and let*. >> >> > If fn and let are really special forms and not macros, could you >> > explain why? >> >> fn and let (and also loop) are macros around the real special forms fn* >> and let* (and loop*) that add support for destructuring. For example, >> >> (let [[a b] [1 2]] >> (+ a b)) >> >> expands to >> >> (let* >> [vec__8592 [1 2] >> a (clojure.core/nth vec__8592 0 nil) >> b (clojure.core/nth vec__8592 1 nil)] >> (+ a b)) >> >> where the destructuring has been transformed to "normal" code already. >> >> Bye, >> Tassilo >> > -- > 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 > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
