Best practices for logical const

[Jakob Ovrum]

On Saturday, 15 February 2014 at 10:52:25 UTC, Jonathan M Davis 
wrote:
> If you want logical const, don't use const or immutable at all. 
> To do so is
> undefined as they require physical constness/immutability. So, 
> if you want
> logical const, you need to indicate constness in some other way 
> that's not
> defined by the language. Pretty much by definition, you can't 
> have logical
> const with const or immutable, because the only way to even 
> attempt it
> involves casts, which means undefined behavior. I'd strongly 
> advise against
> even considering it, let alone trying it.
>
> - Jonathan M Davis

+1.

Shoe-horning D's const into C++'s const is a bad idea. They are 
fundamentally different and shouldn't be used the same way.

I like to think D's const exists because of immutable and for 
that reason alone.