23 Iterators library [iterators]

23.5 Iterator adaptors [predef.iterators]

23.5.6 Counted iterators [iterators.counted]

23.5.6.4 Element access [counted.iter.elem]

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constexpr decltype(auto) operator*(); constexpr decltype(auto) operator*() const requires dereferenceable<const I>;
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Effects: Equivalent to: return *current;
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constexpr decltype(auto) operator[](iter_difference_t<I> n) const requires random_­access_­iterator<I>;
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Preconditions: n < length.
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Effects: Equivalent to: return current[n];