Christoph schrieb:

> however hashes have different
> Hash values (their ids - the same is true for Sets)

Correction: If I remember correctly Set uses something

def hash
    @rep_hash.hash
end

which is effectively the same as using the id of
the Sets as Hash values (which makes you wonder
why go through the trouble and provide the Set class
with a customized #hash method at all )

/Christoph