namespace std::ranges {
template<move_constructible T, semiregular Bound>
requires (is_object_v<T> && same_as<T, remove_cv_t<T>> &&
(integer-like-with-usable-difference-type<Bound> ||
same_as<Bound, unreachable_sentinel_t>))
class repeat_view<T, Bound>::iterator {
private:
using index-type = // exposition only
conditional_t<same_as<Bound, unreachable_sentinel_t>, ptrdiff_t, Bound>;
const T* value_ = nullptr; // exposition only
index-type current_ = index-type(); // exposition only
constexpr explicit iterator(const T* value, index-type b = index-type()); // exposition only
public:
[…]
constexpr iterator& operator++() noexcept;
constexpr iterator operator++(int) noexcept;
constexpr const T& operator[](difference_type n) const noexcept;
friend constexpr bool operator==(const iterator& x, const iterator& y) noexcept;
friend constexpr auto operator<=>(const iterator& x, const iterator& y) noexcept;
friend constexpr difference_type operator-(const iterator& x, const iterator& y) noexcept;
};
}
[…]
constexpr iterator& operator++() noexcept;
-5- Effects: Equivalent to:
++current_; return *this;
constexpr iterator operator++(int) noexcept;
-6- Effects: Equivalent to:
auto tmp = *this; ++*this; return tmp;
[…]
friend constexpr bool operator==(const iterator& x, const iterator& y) noexcept;
-15- Effects: Equivalent to:
return x.current_ == y.current_;
friend constexpr auto operator<=>(const iterator&x, const iterator& y) noexcept;
-16- Effects: Equivalent to:
return x.current_ <=> y.current_;
[…]
friend constexpr difference_type operator-(const iterator& x, const iterator& y) noexcept;
-19- Effects: Equivalent to:
return static_cast<difference_type>(x.current_) - static_cast<difference_type>(y.current_);
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