How to use mpl sequence as variadic template parameters

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Suppose I have a sequence

using r123 = boost::mpl::range_c<int, 0, 2>;

and I want to instantiate a template:

template <typename A, typename B, typename C>
struct abc_ {
     int a = A::value;
     int b = B::value;
     int c = C::value;
};

How does one instantiate such a template with a mpl sequence? If the target class is variadic (c++11), is the technique different?

Thanks.

asked 34 secs ago

KentH

671

How to use mpl sequence as variadic template parameters