🚀 go-pugleaf

Magnus Hult wrote:

> Hi there,
>
> is there anyway to redimension an array without deleting stuff that's
> already in it (something like VB's "ReDim Preserve")?
>
> I know it's possible to do this:
> int array[1];
> array[17] = 1234;
> but can I be sure no important data are being overwritten?
>

It's possible to do this, it's also undefined behavior (you are writing
into random memory off the end of your aray). The easiest way of
achieving this is to look at the container std::vector which is supposed
to act like a resizable array (or if you are doing lots of numerical
work, std::valarrray might be more useful)

otherwise, you may have to allocate a bigger array using new [] and copy
all the old elements across and delete the first array.

Nick