ISeq is a interface on Clojure JVM. So that will work. In ClojureScript it
won't as ISeq is a protocol.
On Friday, June 29, 2012, Mark Engelberg wrote:
> On Fri, Jun 29, 2012 at 5:17 PM, David Nolen
> <dnolen.li...@gmail.com<javascript:_e({}, 'cvml', 'dnolen.li...@gmail.com');>
> > wrote:
>
>> As I said, if ISeq and ILast are both protocols that won't work. No
>> protocol inheritance.
>>
>>
> I don't see how inheritance factors into this. This works just fine in
> Clojure 1.3. What am I missing?:
>
> (defprotocol Last
> (better-last [s]))
>
> (extend-protocol Last
> nil
> (better-last [s] (last s))
> Object
> (better-last [s] (last s))
> clojure.lang.ISeq
> (better-last [s] (last s))
> clojure.lang.Reversible
> (better-last [s] (first (rseq s)))
> java.lang.String
> (better-last [s] (nth s (dec (count s))))
> clojure.lang.IPersistentVector
> (better-last [s] (peek s)))
>
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