Re: Bug report: function metadata is broken
On 13 Jul., 12:03, Meikel Brandmeyer m...@kotka.de wrote: I'm not sure, though, why the metadata gets moved to the function on redefinition. Does anyone know why this is so? (defn foo [x] x) (defn foo [x y] (+ x y)) (:arglists (meta (var foo))) == ([x y]) (:arglists (meta foo)) == ([x]) Thanks, Andreas -- 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
Bug report: function metadata is broken
Hi,
I asked in the IRC channel about metadata on functions[1], and was
told that it's indeed possible in 1.2. I tried this at the REPL and
saw the following behavior (which looks like a bug):
user= (defn ^{:foo v1.0} mfoo mfoo docstring [] (println foo v1.0))
#'user/mfoo
user= (meta mfoo)
{:ns #Namespace user, :name mfoo}
user= (mfoo)
foo v1.0
nil
user= (defn ^{:foo v2.0} mfoo mfoo docstring [] (println foo v2.0))
#'user/mfoo
user= (meta mfoo)
{:ns #Namespace user, :name mfoo, :file NO_SOURCE_PATH, :line
33, :arglists ([]), :doc mfoo docstring, :foo v1.0}
user= (mfoo)
foo v2.0
nil
This is from the latest source:
$ git remote -v
originhttp://github.com/clojure/clojure.git (fetch)
originhttp://github.com/clojure/clojure.git (push)
$ git rev-parse HEAD
d184ed95817c5ddfd5874ea75e83e0df7e753c24
It appears I can't create new tickets on assembla[2], so I'm posting
to the mailing list instead.
Thanks!
Mike
[1] http://clojure-log.n01se.net/#04:25
[2] http://www.assembla.com/spaces/clojure/tickets
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Re: Bug report: function metadata is broken
Hi,
On Jul 13, 11:52 am, Mike Mazur mma...@gmail.com wrote:
I asked in the IRC channel about metadata on functions[1], and was
told that it's indeed possible in 1.2. I tried this at the REPL and
saw the following behavior (which looks like a bug):
user= (defn ^{:foo v1.0} mfoo mfoo docstring [] (println foo v1.0))
#'user/mfoo
user= (meta mfoo)
{:ns #Namespace user, :name mfoo}
user= (mfoo)
foo v1.0
nil
user= (defn ^{:foo v2.0} mfoo mfoo docstring [] (println foo v2.0))
#'user/mfoo
user= (meta mfoo)
{:ns #Namespace user, :name mfoo, :file NO_SOURCE_PATH, :line
33, :arglists ([]), :doc mfoo docstring, :foo v1.0}
user= (mfoo)
foo v2.0
nil
Metadata on functions works as expected:
user= (meta (with-meta (fn [] :with-meta) {:foo v1.0}))
{:foo v1.0}
Hinting the argument to defn (or providing the optional meta map)
attaches the metadata to the Var:
user= (defn ^{:mfoo v1.0} mfoo mfoo docstring {:foo v1.0} []
(println foo v1.0))
#'user/mfoo
user= (meta #'mfoo)
{:ns #Namespace user, :name mfoo, :file NO_SOURCE_PATH, :line
1, :arglists ([]), :foo v1.0, :doc mfoo docstring, :mfoo v1.0}
user= (meta mfoo)
{:ns #Namespace user, :name mfoo}
I'm not sure, though, why the metadata gets moved to the function on
redefinition.
Sincerely
Meikel
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