Downcasting from base pointer to templated derived types

Question

I have the following hierarchy:

class base
{
public:
   virtual ~base(){}
   virtual void foo() {}
};

template 
class derived1 : public base
{         


        

Answer 1

You could add a virtual method to do a meta-type check of some kind:

class base
{
public:
    ~base(){}
    virtual void foo() {}
    virtual bool isa(const char* type_to_test){
          return strcmp(type_to_test,"base")==0;}
};

template 
class derived1 : public base
{
   virtual void foo() {};
   virtual bool isa(const char* type_to_test){
   return strcmp(type_to_test,"derived1")==0;}
};