I think the general solution would be a weak identity map. On Sunday, September 1, 2013 6:58:25 AM UTC-7, Colin Jones wrote: > > I thought of protocols initially here too, but protocols just define > functions, so where would the data live that you want as metadata? > > A closure over the data? This implies extending the protocol on a > per-instance basis, which afaik doesn't exist (cljs design work aside > http://dev.clojure.org/display/design/specify+i.e.+reify+for+instances). > > Some global map? We can't key on arbitrary java objects since the hashcode > can change. Is there a key that will work? > > A var? We can already do that. > > Maybe there's someplace I'm missing where you could store this data and > look it up later via a protocol implementation? > >
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