D's greatest mistakes

[Walter Bright]

Andrei Alexandrescu wrote:
> Syntax is the main issue in implementing this feature. Due to the 
> implicit nature of reference semantics for classes, there was no syntax 
> to distinguish between the head and the tail when qualifying.
> 
> FWIW I just thought of this syntax. It might work but it's not intuitive:
> 
> const()C tailConst;

Syntax was not the issue. Back when we tried hard to make this work, there were 
many syntaxes proposed for it. The issue is the semantic conflation between a 
reference and what it refers to.