Re: [SQLObject] I wish bool evaluation of selectResults objects ran .count()

[Oleg B. <ph...@ph...>]

On Wed, Jan 27, 2010 at 03:30:18PM +0000, Matthew Wilson wrote:
>     def __nonzero__(self):
>         return self.count()

   This could led to a potential problem in code like this:

if some_condition:
    query = MyTable.select(...)
else:
    query = None

if query:
    ...

   There is a subtle bug if self.count() returns 0. Currently people are
accustomed that SelectResults instances are always evaluated to True in a
boolean context.
   I don't know, though, how often people write code like that.

Oleg.
-- 
     Oleg Broytman            http://phd.pp.ru/            ph...@ph...
           Programmers don't die, they just GOSUB without RETURN.