Sharing in D

[JAnderson]

Walter Bright wrote:
> http://www.reddit.com/comments/6u7k0/sharing_in_d/

I like this proposal.  Maybe the shared option could be in the typical 
bracket notation that D is so fond off:

shared
{
    Object X;  //Shared object
    class Foo() {}  //Shared class for any object that uses this / 
Shared members
    class Bar() {}
}

That way the few people that are passing non-shared objects around can 
simply put everything into a shared block, simplifying migration.

-Joel