C++中的动态类型

Question

Is it possible to determine the data-type to use during runtime? Let's consider an example code like this:

void myFunction(type) {

    new std::unordered_map<type, type> umap;
}
...

I'm aware that I can make use of std::any to support multi-types but I just want to know if there's any way to do the former.

Thanks!

Answer 1

yes you can by using templates with C++ , for quick example :

template<typename genericType>
void myFunction(genericType variable) {
   unordered_map<genericType, genericType> umap;
}

ps: i don't think you need to use new keyword here.