Logical const

[Walter Bright]

Max Samukha wrote:
> The problem is that logical const has many perfectly valid use cases. 
> You cannot simply tell people: "Don't use it. It is a fraud".

I am not and never have said "don't use it. It's a fraud." I said that the C++ 
language has no notion of "logical constness", and that it is nothing more than 
a popular convention. The notion that C++ supports logical constness is the fraud.


> They will 
> still be using casts or not using D. As casting away const is undefined 
> behavior in D, the outcome will be every second non-trivial D program 
> relying on undefined behavior.

Yes, it's undefined behavior. That doesn't mean you cannot use it, just that you 
are responsible for getting it right rather than the compiler.