9 Iterators library [iterators]

9.7 Iterator adaptors [iterators.predef]

9.7.6 Counted iterators [iterators.counted]

9.7.6.2 counted_iterator operations [counted.iter.ops]

9.7.6.2.5 counted_iterator::operator* [counted.iter.op.star]

constexpr decltype(auto) operator*(); constexpr decltype(auto) operator*() const requires dereferenceable<const I>;

Effects: Equivalent to: return *current;