c++ - typelist-like (?) template class -
i'm trying achieve following: create template class uses template arguments create instance of template type , use somewhere in the, example constructor. consider following example:
template <typename t> class foo { public: explicit foo(const t& data) : m_data(data) {} t m_data; }; template <typename t01, typename t02> class bar { public: explicit bar(int data) : m_storage(t01(data), t02(data)) {} void print() { boost::fusion::for_each(m_storage, printer()); } private: boost::fusion::vector<t01, t02> m_storage; }; and usage:
bar<foo<int>, foo<int>> b(5); b.print(); but if want flexibility in bar class , want number of these t01, t02 classes varying? example:
bar<foo<int>, foo<int>> b(5); b.print(); bar<foo<int>, foo<int>>, foo<int>> c(6); c.print(); something using argument pack maybe?
edit001:
final working version on coliru.
you looking variadic template (available since c++11)
template <typename ... ts> class bar { public: explicit bar(int data) : m_storage(ts(data)...) {} void print() { boost::fusion::for_each(m_storage, printer()); } private: boost::fusion::vector<ts...> m_storage; }; 
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