The following code example is taken from the book
C++ Templates - The Complete Guide, 2nd Edition
by David Vandevoorde, Nicolai M. Josuttis, and Douglas Gregor,
Addison-Wesley, 2017
© Copyright David Vandevoorde, Nicolai M. Josuttis, Douglas Gregor 2017
// recursive case
template<unsigned N, typename Result = Valuelist<unsigned>>
struct MakeIndexListT
: MakeIndexListT<N-1, PushFront<Result, CTValue<unsigned, N-1>>>
{
};
// basis case
template<typename Result>
struct MakeIndexListT<0, Result>
{
using Type = Result;
};
template<unsigned N>
using MakeIndexList = typename MakeIndexListT<N>::Type;