[const.iterators.ops] (original) (raw)

24 Iterators library [iterators]

24.5 Iterator adaptors [predef.iterators]

24.5.3 Constant iterators and sentinels [const.iterators]

24.5.3.5 Operations [const.iterators.ops]

constexpr basic_const_iterator(Iterator current);

Effects: Initializes current_ with std​::​move(current).

template<[convertible_to](concept.convertible#concept:convertible%5Fto "18.4.4 Concept convertible_­to [concept.convertible]")<Iterator> U> constexpr basic_const_iterator(basic_const_iterator<U> current);

Effects: Initializes _current__with std​::​move(current.current_).

Effects: Initializes current_ with std​::​forward<T>(current).

constexpr const Iterator& base() const & noexcept;

Effects: Equivalent to: return current_;

constexpr Iterator base() &&;

Effects: Equivalent to: return std​::​move(current_);

constexpr _reference_ operator*() const;

Effects: Equivalent to: return static_cast<_reference_>(*current_);

constexpr const auto* operator->() const requires is_lvalue_reference_v<iter_reference_t<Iterator>> && [same_as](concept.same#concept:same%5Fas "18.4.2 Concept same_­as [concept.same]")<remove_cvref_t<iter_reference_t<Iterator>>, value_type>;

Returns: If Iterator models contiguous_iterator,to_address(current_); otherwise, addressof(*current_).

constexpr basic_const_iterator& operator++();

Effects: Equivalent to:++current_;return *this;

constexpr void operator++(int);

Effects: Equivalent to: ++current_;

constexpr basic_const_iterator operator++(int) requires [forward_iterator](iterator.concept.forward#concept:forward%5Fiterator "24.3.4.11 Concept forward_­iterator [iterator.concept.forward]")<Iterator>;

Effects: Equivalent to:auto tmp = *this;++*this;return tmp;

Effects: Equivalent to:--current_;return *this;

Effects: Equivalent to:auto tmp = *this;--*this;return tmp;

Effects: Equivalent to:current_ op n;return *this;

Effects: Equivalent to: return static_cast<_reference_>(_current__[n]);

template<[sentinel_for](iterator.concept.sentinel#concept:sentinel%5Ffor "24.3.4.7 Concept sentinel_­for [iterator.concept.sentinel]")<Iterator> S> constexpr bool operator==(const S& s) const;

Effects: Equivalent to: return current_ == s;

Returns: std​::​move(current_).

Effects: Equivalent to:return current_ op y.current_;

Effects: Equivalent to: return current_ op y;

Effects: Equivalent to: return x op y.current_;

friend constexpr basic_const_iterator operator+(const basic_const_iterator& i, difference_type n) requires [random_access_iterator](iterator.concept.random.access#concept:random%5Faccess%5Fiterator "24.3.4.13 Concept random_­access_­iterator [iterator.concept.random.access]")<Iterator>;friend constexpr basic_const_iterator operator+(difference_type n, const basic_const_iterator& i) requires [random_access_iterator](iterator.concept.random.access#concept:random%5Faccess%5Fiterator "24.3.4.13 Concept random_­access_­iterator [iterator.concept.random.access]")<Iterator>;

Effects: Equivalent to: return basic_const_iterator(i.current_ + n);

friend constexpr basic_const_iterator operator-(const basic_const_iterator& i, difference_type n) requires [random_access_iterator](iterator.concept.random.access#concept:random%5Faccess%5Fiterator "24.3.4.13 Concept random_­access_­iterator [iterator.concept.random.access]")<Iterator>;

Effects: Equivalent to: return basic_const_iterator(i.current_ - n);

template<[sized_sentinel_for](iterator.concept.sizedsentinel#concept:sized%5Fsentinel%5Ffor "24.3.4.8 Concept sized_­sentinel_­for [iterator.concept.sizedsentinel]")<Iterator> S> constexpr difference_type operator-(const S& y) const;

Effects: Equivalent to: return current_ - y;

Effects: Equivalent to: return x - y.current_;