Ethan Furman writes:
> And what would be this 'sensible definition' [of value equality]?
I think that's the wrong question. I suppose Andreas's point is that
when the programmer doesn't provide a definition, there is no such
thing as a "sensible definition" to default to. I disagree, but given
that as the point of discussion, asking what the definition is, is moot.
> 2) The 'is' operator is specialized, and should only rarely be
> needed.
Nitpick: Except that it's the preferred way to express identity with
singletons, AFAIK. ("if x is None: ...", not "if x == None: ...".)
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