John Maddock wrote:
Can you give an example of how it's usage would be?
Sort an interesting question. I'm imagining something like:
template<class T> int f(T const & t){ if(std::is_lteral_type<T>) return t; else return g(t); // do some sort of conversion }
in order to skip instantiation/invokation of g when it isn't necessary in this example.
That wouldn't work - just because a type is a literal type doesn't mean that it's convertible to int. In that particular case wouldn't is_convertible do?
lol - I knew this would happen. It's very difficult to make a quick short answer to a question such as this. I'm sure I could spend some time trying to craft a better example. The context in which the question occurred to me is way too complicated to paste in here. So I'll turn the tables. If there is no use case for it, why is it in the standard? What use case did those who wrote the standard have in mind? I'm all ears. Robert Ramey