Re: Generic hash function?

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От Tom Lane
Тема Re: Generic hash function?
Дата
Msg-id 24247.1165181600@sss.pgh.pa.us
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Ответ на Generic hash function?  (Brian Hurt <bhurt@janestcapital.com>)
Ответы Re: Generic hash function?  (Brian Hurt <bhurt@janestcapital.com>)
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Brian Hurt <bhurt@janestcapital.com> writes:
> I'm trying to write a generic equals operator that works on type
> anyelement,

What for?  You'd ultimately have to depend on the various actual input
types' native equality operators, so I don't see what this'd buy except
a layer of useless-seeming overhead.  Also, it could only be hashable
if the input type's equality is hashable, and we don't have any way to
deal with a "sometimes hashable" equality operator.

            regards, tom lane

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