Logical const

[Walter Bright]

so wrote:
> No need to go that far.
> 
> void fn(const A, A) {...}
> A a;
> fn(a, a); // what do you expect here?
> 
> As far as i know D/C++ have the same treatment for const member functions.
> It has been this way forever.


Yup. It's why I think it is worthwhile that I spend time in this thread 
explaining things over and over. There are a lot of mistaken assumptions and 
baggage people carry around about const in both D and C++.


(One of the ironies of C++ const is that programmers assume it behaves like D 
const/immutable, but rely on it not doing so.)