I think quoting plays a part here:
Clojure 1.3.0
user=> {(list 1 2 3) :list [1 2 3] :vec}
IllegalArgumentException Duplicate key: (1 2 3)
clojure.lang.PersistentArrayMap.createWithCheck (PersistentArrayMap.java:70)
Stuart
On 3 April 2012 22:41, JuanManuel Gimeno Illa <jmgim...@gmail.com> wrote:
> More examples in clojure 1.3.0:
>
> user=> {[1 2 3] :vector '(1 2 3) :list}
> {[1 2 3] :list}
>
> but
>
> user=> #{[1 2 3] (1 2 3)}
> IllegalArgumentException Duplicate key: (1 2 3)
> clojure.lang.PersistentHashSet.createWithCheck (PersistentHashSet.java:68)
>
> ... anyone has an explanation?
>
> Juan Manuel
>
> On Tuesday, April 3, 2012 10:55:26 AM UTC+2, mnicky wrote:
>>
>> Another interesting fact is that:
>>
>> Clojure 1.2.1
>> user=> {'(1) :list [1] :vector}
>> java.lang.**IllegalArgumentException: Duplicate key: (1)
>> (NO_SOURCE_FILE:0)
>>
>> Clojure 1.3.0
>> user=> {'(1) :list [1] :vector}
>> {(1) :vector}
>>
>> Clojure 1.4.0-beta1
>> user=> {'(1) :list [1] :vector}
>> {(1) :vector}
>>
>> ...but I don't know what's going on.
>>
>>
>> On Tuesday, April 3, 2012 9:11:50 AM UTC+2, JuanManuel Gimeno Illa wrote:
>>>
>>> Playing with some problems of 4clojure, I wanted to make a map which,
>>> for each empty collection, returns a keyword. But it seems that it is
>>> impossible to have both an empty list and an empty vector in the same map.
>>>
>>> user=> {() :list}
>>> {() :list}
>>> user=> {() :list [] :vector}
>>> IllegalArgumentException Duplicate key: clojure.lang.PersistentList$**
>>> EmptyList@1 clojure.lang.**PersistentArrayMap.**createWithCheck
>>> (PersistentArrayMap.java:70)
>>> user=> {[] :vector}
>>> {[] :vector}
>>>
>>> I supposed that this is due to (= [] ()) but
>>>
>>> user=> {'(1) :list [1] :vector}
>>> {(1) :vector}
>>> user=> (= [1]'(1))
>>> true
>>>
>>> What am I missing?
>>>
>>> Juan Manuel
>>>
>> --
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