[Development] Why can't QString use UTF-8 internally?

[Thiago Macieira]

On Wednesday 11 February 2015 01:52:34 Konstantin Ritt wrote:
> 2015-02-11 1:26 GMT+04:00 Thiago Macieira <thiago.macieira at intel.com>:
> > On Wednesday 11 February 2015 00:37:41 Konstantin Ritt wrote:
> > > Yes, that would be an ideal solution. Unfortunately, that would also
> > 
> > break
> > 
> > > a LOT of existing code.
> > > In Qt4 times, I was doing some experiments with the QString adaptive
> > > storage (similar to what NSString does behind the scenes).
> > 
> > I've thought of this too.
> > 
> > This stumbles on QString's implicit sharing. If you do this:
> >         QString foo = "some UTF-8 text";
> >         QString copy = foo;
> >         qDebug() << foo.constData()[0];
> 
> In my experiments (a QString with an adaptive storage), data()/constData()
> returns uchar*; 

No, it doesn't. It returns QChar because it has returned QChar since Qt 2. You 
cannot change this.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center