tmp/tmpvx6i_vwv/{from.md → to.md}
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| 1 |
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#### Non-member functions <a id="reverse.iter.nonmember">[[reverse.iter.nonmember]]</a>
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``` cpp
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template<class Iterator1, class Iterator2>
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constexpr auto operator-(
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const reverse_iterator<Iterator1>& x,
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const reverse_iterator<Iterator2>& y) -> decltype(y.base() - x.base());
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```
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*Returns:* `y.base() - x.base()`.
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``` cpp
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template<class Iterator>
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constexpr reverse_iterator<Iterator> operator+(
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typename reverse_iterator<Iterator>::difference_type n,
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const reverse_iterator<Iterator>& x);
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```
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*Returns:* `reverse_iterator<Iterator>(x.base() - n)`.
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``` cpp
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friend constexpr iter_rvalue_reference_t<Iterator>
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iter_move(const reverse_iterator& i) noexcept(see below);
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```
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*Effects:* Equivalent to:
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``` cpp
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auto tmp = i.base();
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return ranges::iter_move(--tmp);
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```
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*Remarks:* The expression in `noexcept` is equivalent to:
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``` cpp
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is_nothrow_copy_constructible_v<Iterator> &&
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noexcept(ranges::iter_move(--declval<Iterator&>()))
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```
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``` cpp
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template<indirectly_swappable<Iterator> Iterator2>
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friend constexpr void
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iter_swap(const reverse_iterator& x,
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const reverse_iterator<Iterator2>& y) noexcept(see below);
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```
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*Effects:* Equivalent to:
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``` cpp
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auto xtmp = x.base();
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auto ytmp = y.base();
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ranges::iter_swap(--xtmp, --ytmp);
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```
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*Remarks:* The expression in `noexcept` is equivalent to:
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``` cpp
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is_nothrow_copy_constructible_v<Iterator> &&
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is_nothrow_copy_constructible_v<Iterator2> &&
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noexcept(ranges::iter_swap(--declval<Iterator&>(), --declval<Iterator2&>()))
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```
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``` cpp
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template<class Iterator>
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constexpr reverse_iterator<Iterator> make_reverse_iterator(Iterator i);
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```
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*Returns:* `reverse_iterator<Iterator>(i)`.
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