Hi Doug, First, let me say it is really nice to see this implemented.
template<typename T, typename... Args> void printf(const char* s, const T& value, const Args&... args) { while (*s) { if (*s == '%' && *++s != '%') { std::cout << value; return printf(++s, args...); } std::cout << *s++; throw std::runtime_error("extra arguments provided to printf"); }
Are variadic templates worthwhile? Will they help us build better, cleaner Boost libraries in the future?
I think the answer to that is definitely yes. There's quiye a few libraries in boost that use the preprocessor in lack of something better.
Should we bring variadic templates to the C++ committee,
It does seem to simplify quite a few libraries, doesn't it. As for the printf-example, then it might be reasonable to consider code-bloat a little. If you don't watch out a little, it might generate a lot of code. -Thorsten