HI Ambrose,
Thanks for your reply. But why this one is working?
(defn check-nil [v]
{:pre [nil? v]}
v)
Br,
Mamun
On Thursday, February 13, 2014 11:51:31 AM UTC+1, Ambrose Bonnaire-Sergeant
wrote:
>
> Hi Mamun,
>
> This is the correct syntax (you're missing some parens).
>
> (defn check-keyword [v] {:pre [(keyword? v)]} v)
>
> Thanks,
> Ambrose
>
>
> On Thu, Feb 13, 2014 at 6:47 PM, Mamun <mamu...@gmail.com <javascript:>>wrote:
>
>> Hi
>>
>> I am just testing clojure :pre condition. But look like using keyword?,
>> it is not working in clojure 1.5.1.
>>
>> (defn check-keyword [v] {:pre [keyword? v]} v)
>>
>> (defn check-nil [v] {:pre [nil? v]} v)
>>
>> (check-keyword “sdf”) ;Not throwing exception here
>>
>> (check-nil nil) ;Throwing exception
>>
>>
>>
>> Br,
>>
>> Mamun
>>
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