Expansion of a parameter pack
suggest changeThe pattern parameter_pack ...
is expanded into a list of comma-separated substitutions of parameter_pack
with each one of its parameters
template<class T> // Base of recursion
void variadic_printer(T last_argument) {
std::cout << last_argument;
}
template<class T, class ...Args>
void variadic_printer(T first_argument, Args... other_arguments) {
std::cout << first_argument << "\n";
variadic_printer(other_arguments...); // Parameter pack expansion
}
The code above invoked with variadic_printer(1, 2, 3, "hello");
prints
1
2
3
hello
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