Thread: A Question About C++ Template

That's way too fancy for such a simple assert:

Code:

#include <type_traits>
#include <vector>
#include <string>
using namespace std;
 
template <typename T>
void foo(T& cont)
{
	static_assert(is_same<typename T::value_type, string>::value, "Contained element must be string");
}
 
int main() {
	vector<int> vi;
	foo(vi);
	return 0;
}