thanks!
sun
On Feb 14, 4:34 pm, Brian Doyle brianpdo...@gmail.com wrote:
On Sat, Feb 14, 2009 at 2:24 PM, wubbie sunj...@gmail.com wrote:
Hi,
a quick question:
user= (keys {:a 1 :b 2})
(:a :b)
But
user= (key {:a 1})
java.lang.ClassCastException: clojure.lang.PersistentArrayMap cannot
be cast to java.util.Map$Entry (NO_SOURCE_FILE:0)
I see defn key in core.clj, though.
What can be the correct usage of fn key, then?
Here is the correct usage of fn key:
1:1 user= (key (first {:a 1}))
:a
Key only accepts a map entry and not a Map object.
thanks in advance,
-sun
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