On 19 July 2010 09:00, Meikel Brandmeyer <m...@kotka.de> wrote:
> Hi,
>
> On Jul 19, 8:56 am, boyan <bo...@taobao.com> wrote:
>
>> I have a question about apply function.
>> For examle,create a hash map:
>>
>> user=> (hash-map :a 1 :b 2)
>> {:a 1, :b 2}
>>
>> It works fine,but if i want to use apply:
>>
>> user=> (apply hash-map :a 1 :b 2)
>> java.lang.IllegalArgumentException: Don't know how to create ISeq from:
>> java.lang.Integer (NO_SOURCE_FILE:0)
>>
>> Why it throw this exception?Is apply could not work with keyword? Any
>> solution?
>
> The last argument to apply has to be a sequence (or a thing you can
> call seq on).
>
> (apply hash-map :a 1 [:b 2]) or (apply hash-map :a 1 :b 2 nil)
Or, perhaps what he was trying to do:
user=> (apply hash-map [:a 1 :b 2])
{:a 1, :b 2}
--
Michael Wood <esiot...@gmail.com>
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