i'm trying to achieve something like this:
I have a templated base class which i want to inherit dynamically
template<typename A, typename B>
class fooBase
{
public:
fooBase(){};
~fooBase(){};
};
desired method: (something like this, not really sure how to do it)
template <typename... Interfaces>
class foo : public Interfaces...
{
public:
foo();
~foo();
}
and my goal is to have the foo class act like this:
second method:
class foo()
: public fooBase<uint8_t, float>
, public fooBase<uint16_t, bool>
, public fooBase<uint32_t, int>
// and the list could go on
{
foo();
~foo();
}
with the second method the problem is that if i instantiate an foo object, it will inherit all the time those 3 base classes, i want to make it more generally and when instantiate a foo object, give it with variadic templates the parameters for the base classes, so that i can use the foo class for other types(maybe will inherit just one base class, maybe five)
Thank you
example for instantiating foo
foo<<uint8_t, float>, <uint16_t, bool>, <uint32_t, int>, /* and the list could go on and on */> instance
You could try recursive variadic templates, taking 2 arguments at a time to add a derivation from fooBase.
It could be something like:
template<typename A, typename B>
class fooBase
{
public:
fooBase(){};
~fooBase(){};
};
template<typename A, typename B, typename ... C>
class foo: public fooBase<A, B>, public foo<C ...> {
};
// termination version by partial specialization
template<typename A, typename B>
class foo<A, B>: public fooBase<A, B> {
};
You can then declare:
foo<uint8_t, float, uint16_t, bool, uint32_t, int> bar;
and bar will be a subobject of fooBase<uint8_t, float>
, fooBase<uint16_t, bool>
and fooBase<uint32_t, int>