[Kde-pim] Extracting some code from KMail into a lib

[Kevin Krammer]

On Saturday, 2010-09-25, Andras Mantia wrote:
> Ingo Klöcker wrote:
> > I agree with Thomas that it should be a proper singleton if it is a
> > singleton. I don't see the problem with two singletons if in the desktop
> > version MailCommon is just an interface to KMKernel.
> 
> Thanks for the opinion and your interface based solution. Meantime I
> chatted about this with Till as well, and decided to go on with the
> singleton solution (now either yours, or a singleton in the lib and
> KMKernel derives from it). Just that by following the refactoring in small
> steps, right now the lib has the MailCommon passing around, but I will
> change it next week to use a singleton there.

One important thing to consider when doing singletons is to never make a 
QObject singleton unless you are 110% sure it is never going to be used in a 
thread.

Cheers,
Kevin

-- 
Kevin Krammer, KDE developer, xdg-utils developer
KDE user support, developer mentoring
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