bearophile wrote: > You are right, there's a problem here, even once you have added an > ".idup" to AAs. A hash value isn't data, it's metadata, so you may > have a lazily computed mutable metadata of immutable data. Once > computed the hash value essentially becomes an immutable.
This sounds like the difference between "logical const" and "physical const". I use the "logical const" features of C++ (along with the 'mutable' keyword) in C++ all the time for just this purpose. For better or worse, D has gone the "physical const" route. -- Rainer Deyke - rain...@eldwood.com
