on Fri Oct 12 2012, Andrew Sutton <asutton.list-AT-gmail.com> wrote:
If I remember correctly, we assumed that a conversion requirement on the result of an operation, would actually convert (if necessary).
What does "if necessary" mean? I can think of at least two different ways to decide whether a conversion is necessary.
If the expression returns bool, no conversion is necessary. If it does not, then a conversion is needed.
Sorry, that's still too vague to tell me what you mean. Surely this has nothing to do with "bool-ness," so I have to assume bool shows up in an example you have in mind. Could you show a concrete example with specific requirements?
You couldn't, for example, return tribool from == and expect the compiler to pick up overloads for &&, ||, and !.
I don't understand quite how this can be an example of the previous statement (or what you're driving at overall).
Perhaps I misunderstood what you're aiming at.
Perhaps, but I think it's more likely that you simply have something specific in mind that you haven't spelled out, and I am unable to fill in the details without help. -- Dave Abrahams BoostPro Computing Software Development Training http://www.boostpro.com Clang/LLVM/EDG Compilers C++ Boost