Function addCurrency

03.20-rangesCustomAdaptor1/main.cpp:11–16

#B A function returning a callable

// #B A function returning a callable
auto addCurrency(const std::string& suffix)
{
  // #C Make sure you capture by copy!
  return std::views::transform(
    [suffix](auto i) { return std::to_string(i) + suffix; });
}

int main()
{