Perhaps we need to defer const for a while (3.0?)

[Sean Kelly]

Russell Lewis wrote:
> 
> Maybe it's time to stop spinning our wheels here and start making 
> progress on other things.

Personally, I think the current design feels pretty good.  It doesn't 
have rays of divine light shining from it like I hoped, but it's far 
better than C++ const in terms of understandability and utility.  I 
think it says something that my complaints about it have been reduced to 
the use of 'invariant' as a keyword rather than anything substantial.

Also, I do agree with Walter that if const is added it D it must be done 
sooner rather than later.  Despite the comments to the effect that if 
you don't like const you don't have to use it, it really does break a 
lot of code, and the longer D is around the more difficult it will be to 
justify a significant breaking change.


Sean