about kde4's smart pointer
frank.osterfeld at gmx.de
Tue Oct 3 21:16:28 BST 2006
On Tuesday 03 October 2006 17:10, Thiago Macieira wrote:
> Cyrille Berger wrote:
> >On Tuesday 03 October 2006 16:08, Thiago Macieira wrote:
> >> Doesn't QSharedData/QSharedDataPointer do what you want? They have
> >> copy-on-write semantics, though.
> >yes and that's the problem :) They are designed to reduce the number of
> > copy, not to replace pointers and be used as smart pointers.
> There's QPointer, but your object has to be a QObject.
QPointer only guards the pointer (i.e. resets it to 0 if deleted), but it
doesn't do refcounting and auto-deletion. In my own code, I use Frerich's
KSharedPtr replacement he proposed here a year ago . One of it's
advantages is that it's not necessary for the the shared type to inherit
KShared, so one can use the type as normal non-pointer object (IIRC
operator=() etc. is private for KShared).
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