Jonathan M Davis:
> > import std.algorithm;
> > void main() {
> > enum a = [3, 1, 2];
> > enum s = sort(a);
> > assert(equal(a, [3, 1, 2]));
> > assert(equal(s, [1, 2, 3]));
> > }
>
> It's not a bug. Those an manifest constants. They're copy-pasted into
> whatever
> code you used them in. So,
>
> enum a = [3, 1, 2];
> enum s = sort(a);
>
> is equivalent to
>
> enum a = [3, 1, 2];
> enum s = sort([3, 1, 2]);
You are right, there's no DMD bug here. Yet, it's a bit surprising to sort
in-place a "constant". I have to stop thinking of them as constants. I don't
like this design of enums...
On the other hand this gives the error message I was looking for, until today I
didn't even think about const enums:
import std.algorithm;
const enum a = [1, 2];
void main() {
sort(a);
}
So I guess I'll start using "cont enum" and "immutable enum" instead of enums
:-)
Bye,
bearophile
