ha! you cheated with iterate...
try this which is closer to the example...
(first (filter odd? (map #(do (println "realized " %) %) [2 4 6 7 8 9])))
realized 2
realized 4
realized 6
realized 7
realized 8
realized 9
7
Jim
On 19/05/13 15:31, Cedric Greevey wrote:
On Sun, May 19, 2013 at 10:06 AM, Jim - FooBar();
<jimpil1...@gmail.com <mailto:jimpil1...@gmail.com>> wrote:
no need to traverse the entire seq with 'filter' if you only want
the 1st match...
Pretty sure filter is lazy.
user=> (first (filter odd? (map #(do (println "realized " %) %)
(iterate inc 0))))
realized 0
realized 1
1
user=>
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