On Monday, 20 May 2019 06:56:56 PDT Lars Knoll wrote: > I actually think we should consider getting rid of shared_null and instead > have d == nullptr as the null/default constructed state of the object. Yes, > that means we need to check for d == nullptr in member functions, but I > don’t think the overhead is a problem, as d will have to be loaded into a > register in any case.
It does introduce a compare-and-branch that wouldn't otherwise be there, but the cost is minimal compared to what most API would be doing, indeed. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel System Software Products _______________________________________________ Development mailing list [email protected] https://lists.qt-project.org/listinfo/development
