const / in

[Simen kjaeraas]

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.

-- 
Simen