Normal for loops can't really make that work, they're too general, but range for loops plausibly could. Something like for(auto&& e : range) { std:

Normal for loops can't really make that work, they're too general, but range for loops plausibly could. Something like for(auto&& e : range) { std::print("{}" e); join { std::print(", "); } } where join {} is effectively syntax sugar for if(std::next(__first) != __last) {}. The fmt library makes this sort of task easier by providing the join adaptor; this example would become fmt::print("{}", fmt::join(range, ", "));