Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

Variadic templates and multiple inheritance in c++11

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
like image 436
Mihai Avatar asked Mar 07 '16 10:03

Mihai


1 Answers

Change foo to someting similar to this:

template<typename... Interfaces>
class foo : public Interfaces... {
  public:
    foo(Interfaces... ifaces) : Interfaces(ifaces)... {}

  };
like image 148
Jojje Avatar answered Oct 03 '22 13:10

Jojje