[Qt-interest] Qt memory management.

[Ramesh]

Thanks Oliver :)
Have nice day

-----Original Message-----
From: qt-interest-bounces at trolltech.com
[mailto:qt-interest-bounces at trolltech.com] On Behalf Of
Oliver.Knoll at comit.ch
Sent: Wednesday, August 18, 2010 4:23 PM
To: qt-interest at trolltech.com
Subject: Re: [Qt-interest] Qt memory management.

Ramesh wrote on Wednesday, August 18, 2010 12:30 PM:

> ...
> So it means, assignment of one Qstring to another does copy or not?

No: the fact that QString does not inherit from QObject does /not/ imply
that its internal data is copied at the time of assignment ("deep copy"). In
fact the internal QString data is only copied *when needed*, that is when
one of the copies is modified ("copy on write").

Actually that is all well documented here:
http://doc.trolltech.com/4.6/qstring.html#details

And here: http://doc.trolltech.com/4.6/implicit-sharing.html

Cheers, Oliver
--
Oliver Knoll
Dipl. Informatik-Ing. ETH
COMIT AG - ++41 79 520 95 22
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