Qt smart pointer equivalent of boost::shared_array?

Question

While there exists an equivalent of boost::shared_ptr (QSharedPointer) I wasn't able to find something that resembles boost::shared_array.

Of course I could use something similar to

QSharedPointer<const std::vector<T> > shared_vector_ptr(new std::vector<T>(
       reinterpret_cast<T*>(pBuffer),
       reinterpret_cast<T*>(pBuffer+length)
));

but I would like to know if there exists a native Qt solution which provides T& operator[](size_t) and uses delete[] instead of delete. I'm reluctant to use boost in this project since the target machine couldn't have boost installed and the project gets distributed by source.

Note: I know I can specify a deleter by using QSharedPointer::QSharedPointer ( T * ptr, Deleter deleter ), however I dislike approach since the compiler doesn't force you to specify a deleter, which would result in a new [] allocated block deleted by delete.

There are two excelent posts on the subject: stackoverflow.com/questions/5026197/… and stackoverflow.com/questions/7875764/… — KCiebiera
– KCiebiera, Commented Jul 4, 2012 at 9:34
Just for reference: could further downvotes explain themselves? I have no problem with downvotes, but without a comment it's hard to learn what you've done wrong. — Zeta
– Zeta, Commented Aug 2, 2012 at 8:29

cmannett85 · Accepted Answer · 2012-07-04 09:03:29Z

1

I think the nearest is QScopedArrayPointer, but of course it's scoped.

It would be little work to subclass QSharedPointer to silently add your own hidden Deleter that calls delete[] (and add anoperator[]), that way the user wouldn't have to do any thinking, and it's still using Qt native code - you have just wrapped it up neatly.

answered Jul 4, 2012 at 9:03

cmannett85

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