Function joinify

src/include/stringify.h:22–31

template <class T, class A>
T joinify(const A &begin, const A &end, const T &t)
{
  T result;
  for (A it = begin; it != end; it++) {
    if (!result.empty())
      result.append(t);
    result.append(*it);
  }
  return result;
}

#endif