Why is size_t unsigned?

[JS]

On Monday, 22 July 2013 at 12:51:31 UTC, Andrej Mitrovic wrote:
> On 7/22/13, JS <js.mdnq at gmail.com> wrote:
>> foreach doesn't allow you to modify the index to skip over
>> elements.
>
> It does:
>
> -----
> import std.stdio;
>
> void main()
> {
>     int[] x = [1, 2, 3, 4, 5];
>     foreach (ref i; 0 .. 5)
>     {
>         writeln(x[i]);
>         ++i;
>     }
> }
> -----
>
> Writes:
> 1
> 3
> 5

Cool... This should make life easier! Thanks.