On Monday 30 December 2013 00:24:58 Jiergir Ogoerg wrote:
> And because of that I have to (can) resize() it,
A better way is to reserve() + push_back(), but IIRC QVector never contains
uninitialised memory. std::vector, however, does, and expands to less code,
too, with private element types such as yours.
> and resizing sucks
> because it not just creates
> more space for the internal buffer but also initializes each item to
> the default value.
...so does new[]...
> QComposeTableElement *elem;
> vec->reserve(kElemCount);
>
> for(int i=0; i<kElemCount; i++) {
> elem = (QComposeTableElement*) (buf + (i * kElemSize));
> vec->push_back(*elem);
> }
you should use push_back(qMove(*elem)) and implement the move operation on
QComposableTableElement.
--
Marc Mutz <[email protected]> | Senior Software Engineer
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