Generic base class with multiple template specialized derived classes

Question

I have a finite amount of classes with the nearly-same implementation, the only different being the underlying type of data they manipulate:

class IntContainer
{         


        

Answer 1

How about making base template too? Of course there is no way you can do something like

std::vector v;
v.push_back(intf);
v.push_back(boolf);

but the rest you can achieve with something simple as

template
class Base
{
public:
    virtual void setData(T data) = 0;
    virtual T getData() = 0;
};

// Modify GenericContainer's definition like so
template
class GenericContainer : Base { 
    T d;
    public:
    virtual void setData(T data) {d = data;}
    virtual T getData() { return d; }
};

You can use it in any way as long as types match.

IntContainer intc = IntContainer();
intc.setData(42);
std::cout << intc.getData() << std::endl;

BoolContainer boolc = BoolContainer();
boolc.setData(true);
std::cout << boolc.getData() << std::endl;

std::vector v;
v.push_back(intc);
// v.push_back(boolc); No can't do.