C++ mutable in D

[Alexandru Ermicioi]

On Friday, 30 July 2021 at 19:17:55 UTC, Michael Galuza wrote:
> Is there any analogue of C++ `mutable` in D? As far as I 
> understand, this is impossible due to transitive constness, but 
> maybe some variation of `Rebindable` will be useful?
>
> P.S. Of course I mean 'fair' mutable, not qualifier-away 
> `cast()`.

Not possible as other people mentioned. In this case the best 
approach would be to either design your struct to contain const 
and mutable fields, and design it's interface accordingly, or you 
could make a mutable decorator that would be mutable and expose 
mutable aspects, while keeping the decorated instance const.

Best regards,
Alexandru.