Re: Object identity

[Stefan Monnier <monnier@iro.umontreal.ca>]

>> > Well, either I need weak hash tables, or a different implementation
>> > of object-identity.
>> Given your particular situation, you can just flush your hash-table at the
>> end of print-unreadable-object, so it does not even need to be weak.
> Yes, but that would print eq objects differently between two
> subsequent calls to print-unreadable-object, which probably would
> confuse the user.

Might be confusing, but after all, it's a behavior that can appear
even with a "real" implementation of print-unreadable-object.

Another possibility is to print a random number, which simulates the
behavior were a copying GC is called everytime and moves everything around
all the time.


        Stefan