References in D

[bearophile]

Andrei Alexandrescu:

> Our position is that NonNull is only one of several instances 
> of a much more general pattern, which can be addressed with 
> @disable once it is properly tracked inside constructors.

It's an iterative process: some people invent a feature and put 
in a language, others find it partially implementable in 
libraries and/or useful if generalized. Later someone maybe finds 
that one of the library constructs is so commonly used that 
adding some built-in sugar (like a trailing @) makes code shorter 
and nicer, and so on and on :-)

Bye,
bearophile