const double Size = 11.0; char chArray[(int)Size];
template<typename... Arguments> class classname;
template<typename ...Arguments> class classname;
template<typename ... Arguments> class classname;
template<typename... Arguments> class vtclass; vtclass< > vtinstance1; vtclass<int> vtinstance2; vtclass<float, bool> vtinstance3; vtclass<long, std::vector<int>, std::string> vtinstance4;
template <typename First, typename... Rest> class classname;
template <typename... Arguments> returntype functionname(Arguments... args);
template <typename... Arguments> returntype functionname(Arguments&... args); template <typename... Arguments> returntype functionname(Arguments&&... args); template <typename... Arguments> returntype functionname(Arguments*... args);
template <typename... Arguments> returntype functionname(const Arguments&... args);
template<typename... Arguments>
void tfunc(const Arguments&... args)
{
const unsigned numargs = sizeof...(Arguments);
X xobj[numargs]; // array of some previously defined type X
helper_func(xobj, args...);
}
// v1 is NOT a function parameter pack: template <typename... Types> void func1(std::vector<Types...> v1); // v2 IS a function parameter pack: template <typename... Types> void func2(std::vector<Types>... v2);
#include <iostream>
using namespace std;
void print() {
cout << endl;
}
template <typename T> void print(const T& t) {
cout << t << endl;
}
template <typename First, typename... Rest> void print(const First& first, const Rest&... rest) {
cout << first << ", ";
print(rest...); // recursive call using pack expansion syntax
}
int main()
{
print(); // calls first overload, outputting only a newline
print(1); // calls second overload
// these call the third overload, the variadic template,
// which uses recursion as needed.
print(10, 20);
print(100, 200, 300);
print("first", 2, "third", 3.14159);
}
1 10, 20 100, 200, 300 first, 2, third, 3.14159
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