Sorry, it's my mistake.
Because treep map use the comparator to compare keys, and if the comparator
returns 1 constantly,it can not find the item that equals the key.
So i can modified the example,and it works:
user=> (sorted-map-by #(if (= %1 %2) 0 1) :b 1 :a 2)
{:b 1, :a 2}
user=> (:a (sorted-map-by #(if (= %1 %2) 0 1) :b 1 :a 2))
2
user=> (:b (sorted-map-by #(if (= %1 %2) 0 1) :b 1 :a 2))
1
2013/6/6 dennis zhuang <killme2...@gmail.com>
> user=> (sorted-map-by (constantly 1) :b 1 :a 2)
> {:b 1, :a 2}
> user=> (:a (sorted-map-by (constantly 1) :b 1 :a 2))
> nil
> user=> (keys (sorted-map-by (constantly 1) :b 1 :a 2))
> (:b :a)
> user=> (count (sorted-map-by (constantly 1) :b 1 :a 2))
> 2
> user=> (:a (sorted-map-by (constantly 1) :b 1 :a 2))
> nil
>
> It looks so strange.The result map has keys :a and :b,but i can't get
> their values.
> Why? I try to hack the code,but i can't find the reason.
>
>
> --
> 庄晓丹
> Email: killme2...@gmail.com xzhu...@avos.com
> Site: http://fnil.net
> Twitter: @killme2008
>
>
>
--
庄晓丹
Email: killme2...@gmail.com xzhu...@avos.com
Site: http://fnil.net
Twitter: @killme2008
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