I have a templated class, whose type is to be determined by another sub templated constructor.
template <typename V, typename I>
class Text{
public:
template <typename Container, typename V = typename Container::value_type, typename I = typename Container::size_type>
Text(Container& c) {}
};
So usage would be something like:
std::vector<int> v;
Text(v) //Deduces to Text<int, std::size_t>
Unfortunately, I get an error that V and I are being shadowed. This is because it is trying to create a new V and I.
I have seen a solution with using V = typename Container::value_type; but that gives the same error.
CodePudding user response：
Your probably want to write your own deduction guide:
template <typename Container>
Text(Container&) -> Text<typename Container::value_type,
typename Container::size_type>;