PhobosWatch: manifest => enum

[Janice Caron]

On 12/30/07, Janice Caron <caron800 at googlemail.com> wrote:
> In full agreement with you, Walter, having understood all your points
> (at last), but what if we allowed:
>
>     const MyInt m = 3;
>     auto n = m.dup;
>
> It would be no trouble at all for MyInt to supply a dup() function
> whose return value had type MyInt.
>
> The only question is, will it work for plain ints?
>
>     const int m = 3;
>     auto n = m.dup;
>
> And if not, can it be made to work? (That is, can we implement dup for
> all primitive types?)

Actually, come to think of it, the implementation of MyInt.dup would have to be

    struct MyInt
    {
        int x;
        MyInt dup() const { return x.dup; }
    }

so it actually wouldn't work /unless/ dup worked for primitive types.