changing array lengths

[Jarrett Billingsley]

On Tue, Dec 9, 2008 at 11:54 PM, Ellery Newcomer
<ellery-newcomer at utulsa.edu> wrote:
> Does the following totally not make sense? I think it should work.
>
> int[] a = new int[10];
>
> a.length += 30;
>

It's a weird limitation that's been around forever.  Ugh.

Here, have this.

T[] resize(T)(ref T[] arr, ptrdiff_t delta)
{
    arr.length = arr.length + delta;
    return arr;
}

...

auto a = new int[10];
a.resize(30); // now 40
a.resize(-30); // now 10