(:b {:b 1}) => 1
("b" {"b" 1}) => same error.
If you want that to work, you need something that creates ({"b" 1} "b") or
(get {"b" 1} "b")
for your example, I believe this works
(-> (hash-map "b" (hash-map :a 3)) (get "b") :a)
Cheers, Jay
On Thu, May 31, 2012 at 10:55 AM, Boris V. Schmid <boris.sch...@gmail.com>wrote:
> Can someone tell me what I'm overlooking (clojure 1.4)
>
> (-> (hash-map :b (hash-map :a 3)) :b :a)
> 3
> user> (-> (hash-map "b" (hash-map :a 3)) "b" :a)
> ; Evaluation aborted: java.lang.String cannot be cast to clojure.lang.IFn
>
> I'm not sure why the first can work, and the second cannot. Is it a
> logical limitation of the language, or an oversight in how the macro -> is
> build?
>
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