On Fri, May 19, 2006 at 10:12:23AM -0500, Ian Bicking wrote:
> It inherits __nonzero__ already (so SelectResults are always true), but
> does not implement __len__. Like I said, I really dislike those very
> few instances where you might encounter objects you can't test an object
> for truth, so I'm not very positive about that resolution. But I don't
> know, that's really the only way to keep people from introducing bugs
> into their code, since it's so natural (but probably incorrect) to test
> a SelectResult for truthfulness.
We have to choose among the following possibilities:
1) implement __nonzero__() via count() and warn users that it's slow;
2) completely forbid __nonzero__() by raising an exception;
3) allow users to choose; write some classes that a user use to choose the
desired behavior.
Oleg.
--
Oleg Broytmann http://phd.pp.ru/ [EMAIL PROTECTED]
Programmers don't die, they just GOSUB without RETURN.
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