Disallow null references in safe code?

[Andrei Alexandrescu]

On 2/3/14, 9:09 PM, Jonathan M Davis wrote:
> I truly hope that that's never the case. Adding non-nullable references to the
> language is one thing; making them the default is quite another, and making
> them the default would break existing code. And given Walter's normal stance
> on code breakage, I'd be very surprised if he were in favor of making non-
> nullable references or pointers the default.

We are considering making non-nullables the default, @nullable to mark 
optionally null objects, and enable the related checks with an opt-in 
compiler flag.

Andrei