Thanks for the clarification!
*--*
*Eduardo Aquiles Radanovitsck*
ThoughtWorks Brasil
On Fri, Jul 31, 2015 at 6:02 PM, Ben Wolfson <wolf...@gmail.com> wrote:
> On Fri, Jul 31, 2015 at 1:57 PM, Eduardo Aquiles Affonso Radanovitsck <
> eduardoaquiles...@gmail.com> wrote:
>
>> Not sure if this is expected or not:
>>
>> (map (fn [v] {:k v}) #{1 2 3})
>> => ({:k 1} {:k 3} {:k 2})
>> (map #({:k %}) #{1 2 3})
>> ArityException Wrong number of args (0) passed to: PersistentArrayMap
>> clojure.lang.AFn.throwArity (AFn.java:429)
>>
>
> The same behavior is visible in earlier versions of clojure and has to do
> with how the #(...) syntax is parsed. The workaround is #(do {:k %}).
>
> Basically, whatever occurs between the #( and the ) is spliced into a
> list, so if you have just one single expression, it turns into a function
> call:
>
> user=> (defmacro p [k] (println k))
> #'user/p
> user=> (p #({:k %}))
> (fn* [p1__7143#] ({:k p1__7143#})) ;; <---- attempting to invoke a map
> with zero args
> nil
> user=> (p #(do {:k %}))
> (fn* [p1__7144#] (do {:k p1__7144#}))
> nil
>
> --
> Ben Wolfson
> "Human kind has used its intelligence to vary the flavour of drinks, which
> may be sweet, aromatic, fermented or spirit-based. ... Family and social
> life also offer numerous other occasions to consume drinks for pleasure."
> [Larousse, "Drink" entry]
>
> --
> 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.
