What's the current state of D?

[Lutger]

Simen Kjaeraas wrote:

> Lutger wrote:
> 
>> - these other languages go out of their way to make new releases  
>> backwards
>> compatible, sometimes at great costs. They almost never completely  
>> succeed
>> though.
> 
> And D1 makes an effort to follow the spec, and will not incorporate
> breaking changes. D2 is, in many ways, a whole new language. Sure,
> you could argue that D1 code should be compilable in D2, but it
> would matter no more than the argument that C code should be
> compilable in D1.
> 
> --
>   Simen

I'm certainly not making that argument. In the talk Andrei and Walter gave 
at the D conference they mentioned the design goal 'no issue left behind' 
This is what makes D evolution so much more interesting. 

Yet it has a price. Looking at C# for comparison, it is about the same age 
(C is not fair, too old): you can easily upgrade from 2.0 to 3.5 and beyond. 
Most important part of that ease is the ability to use older libraries in a 
newer environment. Still, lots of issues in C# are already beyond fixing.