"Tommi" , dans le message (digitalmars.D:174314), a écrit : > In D it's not possible to make opCast operators implicit. > Therefore I see no way of making "transparent wrappers"; like > structs which could be used as a drop-in replacement for plain > old data types. > > E.g if I wanted to make a SafeInt struct, that behaves otherwise > just like an int, but when operators like +=, *=, ++, -- etc are > used with it, my custom SafeInt operators would check that > there's no integer overflow. If you use alias this to _reveal_ > the internal int value of SafeInt, then that int value's default > operators are used, and thus no overflow checking. > > I find the lack of implicit casting a defect of the language. > I hope that I'm wrong.
Does alias this not fullfill you goal? http://dlang.org/class.html#AliasThis
