const / in

[Dmitry Olshansky]

On 12.12.2010 1:20, Simen kjaeraas wrote:
> Jonathan M Davis <jmdavisProg at gmx.com> wrote:
>
>> It has definitely been suggested before that const should be the 
>> default, and
>> some people would love that, but there's no way that it's going to 
>> happen in D2,
>> and much as I like const, I think that it would be a huge mistake to 
>> do it in
>> any version of D and likely any version of any C-based language. It's 
>> too big of
>> a break with other versions of D and other C-based languages.
>
> I'm torn about the issue. I see reasons to have const by default (or even
> immutable), but having it as the 'real' default would as you say, turn
> away too many programmers.
>
> Hence, I suggest that modules may be marked default-const:
>
> const module foo;
>
> int n; // const int
> mutable int m; // int
>
> This could also be extended to cover pure:
>
> pure const module foo;
>
>
> Is this a good idea? No idea.
>
I think you could still get something very related by

const {
// entire module here
}

That of course, doesn't affect locals.

-- 
Dmitry Olshansky