Re: Does C++ allow you to define explicit casts?

Ben> I don't know C++ that well, and the book I have on it (Stroustrop, 2nd Ben> ed, I think) is 10 years old at least. You can fix that. Get the 3rd edition. Ben> XEmacs has typedefs such as Bytecount and Charcount. Currently they are Ben> just ints but I'd like to introduce some additional type-checking using Ben> C++. In particular, I'd like to define them as classes, with the normal This is a good idea - one of many reasons for C++ compilation. Ben> operators overloaded in normal ways, and to allow free mixing (more or Ben> less) between these types and ints (at the very least, it's reasonable Ben> to pass constant ints to a function expecting a Bytecount or Charcount). Ben> What I don't want is to be able to pass one of them to a function Ben> expecting the other -- but it *should* be possible with an explicit Ben> cast, e.g. (Bytecount) x. Problem is, the "cast operator" that can be Ben> defined on a class seems to define implicit casts, not explicit. Is Ben> there any way to do what I want? You want the "explicit" keyword.