using partial template specialization for pattern matching in c++, simple demo

noloops.cc

#include <iostream>

template <int N>
void pr(const std::string &msg)
{
    std::cout << msg << std::endl;
    pr<N-1>(msg); // would be nice to do tail call optimization here...
}

template <>
void pr<0>(const std::string &msg)
{
}

int main(int argc, char *argv[])
{
    pr<100>("Hello World");
    return 0;
}