How to check for the type of a template parameter?

Question

Suppose I have a template function and two classes

class animal {
}
class person {
}

template
void foo() {
  if (T is animal) {
    kill();
          


        

Answer 1

You can specialize your templates based on what's passed into their parameters like this:

template <> void foo {

}

Note that this creates an entirely new function based on the type that's passed as T. This is usually preferable as it reduces clutter and is essentially the reason we have templates in the first place.