You might want to try implementing a small wrapper class that implements 
ILookup.

Then you can do something like:

(:keyword (MyWrapper. my-obj))

Prefer composition over inheritance, etc.

On Wednesday, 1 March 2017 04:12:06 UTC+8, Ernesto Garcia wrote:
>
> Hi all,
>
> I am using Java class that acts as a map, but doesn't implement Map. (It's 
> not in my hands to modify it).
>
> I would like to do the usual lookup code:
> (:keyword my-obj)
>
> I can't make the class extend ILookup, as ILookup is an interface, not a 
> protocol.
>
> Do you know of any other way to achieve this?
> Wouldn't it be better if ILookup were a protocol?
>
> Thanks,
> Ernesto
>

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