Template type check C++

Question

I have a template function which takes in objects. I need to determine whether the object is derived from a particular base class. If it is derived from the base class, I ne

Answer 1

Without knowing the exact nature of the additional work you want to do, there could be 2 ways might approach this.

Option 1: Say the function you want to call is foo(). You could implement foo() on both baseA and testB. baseA::foo() can give you your extra work while testB:foo() would just do nothing. But this style wouldn't make sense if foo() doesn't belong in either of those 2 classes.

Optional 2: Specialize functionA for baseA (or optionally testB as well)

void function_specialized(baseA* param)
{
    // Do your extra work

    // Then call the common functionA
    functionA(*param);
}

template
functionA(const T& value)
{
   //...
}