sfinae – IT Nursery

How can I add reflection to a C++ application?

May 16, 2022 by IT Nursery

I’d like to be able to introspect a C++ class for its name, contents (i.e. members and their types) etc. I’m talking native C++ here, not managed C++, which has reflection. I realise C++ supplies some limited information using RTTI. Which additional libraries (or other techniques) could supply this information? 28 Answers 28

Templated check for the existence of a class member function?

April 30, 2022 by IT Nursery

Is it possible to write a template that changes behavior depending on if a certain member function is defined on a class? Here’s a simple example of what I would want to write: template<class T> std::string optionalToString(T* obj) { if (FUNCTION_EXISTS(T->toString)) return obj->toString(); else return “toString not defined”; } So, if class T has toString() … Read more