21 Strings library [strings]

21.3 String classes [string.classes]

21.3.3 Class template basic_­string [basic.string]

21.3.3.4 Iterator support [string.iterators]

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constexpr iterator begin() noexcept; constexpr const_iterator begin() const noexcept; constexpr const_iterator cbegin() const noexcept;
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Returns: An iterator referring to the first character in the string.
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constexpr iterator end() noexcept; constexpr const_iterator end() const noexcept; constexpr const_iterator cend() const noexcept;
2
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Returns: An iterator which is the past-the-end value.
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constexpr reverse_iterator rbegin() noexcept; constexpr const_reverse_iterator rbegin() const noexcept; constexpr const_reverse_iterator crbegin() const noexcept;
3
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Returns: An iterator which is semantically equivalent to reverse_­iterator(end()).
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constexpr reverse_iterator rend() noexcept; constexpr const_reverse_iterator rend() const noexcept; constexpr const_reverse_iterator crend() const noexcept;
4
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Returns: An iterator which is semantically equivalent to reverse_­iterator(begin()).