23 Iterators library [iterators]

23.5 Iterator adaptors [predef.iterators]

23.5.1 Reverse iterators [reverse.iterators]

23.5.1.7 Navigation [reverse.iter.nav]

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constexpr reverse_iterator operator+(difference_type n) const;
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Returns: reverse_­iterator(current-n).
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constexpr reverse_iterator operator-(difference_type n) const;
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Returns: reverse_­iterator(current+n).
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constexpr reverse_iterator& operator++();
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Effects: As if by: --current;
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Returns: *this.
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constexpr reverse_iterator operator++(int);
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Effects: As if by: reverse_iterator tmp = *this; --current; return tmp;
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constexpr reverse_iterator& operator--();
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Effects: As if by ++current.
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Returns: *this.
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constexpr reverse_iterator operator--(int);
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Effects: As if by: reverse_iterator tmp = *this; ++current; return tmp;
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constexpr reverse_iterator& operator+=(difference_type n);
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Effects: As if by: current -= n;
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Returns: *this.
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constexpr reverse_iterator& operator-=(difference_type n);
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Effects: As if by: current += n;
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Returns: *this.