On Apr 21, 2011, at 12:57 AM, David Bruant wrote:

>> The stringification of the key in obj[key] is fundamental to objects. It 
>> does not apply to WeakMaps, so wm[obj] seems like a trap. Sometimes o[x] 
>> will convert x to string and index, other times it will use an x object as a 
>> weak map key.
> However, I don't understand this point. If, as I suggested, semantics of ...

I know, you are not proposing always to stringify, of course. That was my 
point: sometimes x is converted to string (depending on base value evaluated 
from o being an object), other times not (o evaluates to a WeakMap instance).

IOW I was making explicit the "different semantics" you propose "using the same 
syntax".

/be

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