[Qt-interest] Iterators and implicitly shared containers

[Sean Harmer]

On 17/12/2010 21:37, Scott Aron Bloom wrote:
> Yes... however, the *it=2; should recognize that the ref count>  1, and
> do a detach/deep copy as necessary no??

Hmm true. It is the call to begin() that performs the detach at present.

Maybe a call to detach() should be added to 
QVector::iterator::operator*() (amongst others). Although then the 
iterator class would have to also store a pointer to the corresponding 
QVector (unless it is calculable from the T* pointer already there).

The above only applies if QVector is built with QT_STRICT_ITERATORS 
though. If not then the iterator is simply a typedef for a plain T*.

Cheers,

Sean