On 03/24/2011 05:40 PM, Meikel Brandmeyer wrote:
The problem is the constructor call. With plain old clojure
functions you could use apply, but Java method and constructor
calls must be hard-wired in the bytecode (and hence at
compilation time) (if I understood this correctly).
Guess that's why a macro, which I tried out of sheer curiosity, doesn't
work, either.
So there will be now way around explicitly specifying the map
keys. Although you can relieve the pain a little with
destructuring as Tassilo already showed. It can be shorted a
bit using :strs.
(defn save-article
[path {:strs [title body]} timestamp]
(ds/save! (Article. path title body timestamp)))
I had been using destructuring, just not in the example, where I had to
have a whole form-params. :strs makes that quite a bit nicer, thanks!
Looking for a bit more info, I found:
http://groups.google.com/group/clojure/browse_thread/thread/a9504c4c9b1a4d9b
explaining :strs, :keys and :syms.
--
Thorsten Wilms
thorwil's design for free software:
http://thorwil.wordpress.com/
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