Question

let’s say I have 200 classes named class1, class2, etc derived from class, and a integer between 1 and 200. Is there a way to instanciate specifically one of the derived class depending on the value of my integer? Obviously I could just manually check for every value but I am wondering is there is anything in C++ that is more flexible

Answer 1

You will have to do a switch on your integer, and instantiate the specific class. If you have this int -> class logic somewhere else in your program, you could consider representing it with a compile-time map. Look at Boost.MPL, specifically boost::mpl::map.