A small utility function to get the null terminator of some string type. Can be useful when dealing with systems where sizeof(wchar_t) can change

get_null_terminator_templated.cpp

#include <string>
#include <iostream>
#include <string>

template <typename T>
constexpr auto NullTerminator() {
    return std::string(sizeof(typename T::value_type), '\0');
}

int main() {
  std::cout << "Null terminator length of std::string: " << NullTerminator<std::string>().size() << "\n";
  // This will return 2 on windows and 4 on linux/mac
  std::cout << "Null terminator length of std::wstring: " << NullTerminator<std::wstring>().size() << "\n";
}