| 相等性比较 |
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template< std::sentinel_for<Iter> S >
constexpr bool operator==( const S& s ) const;
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(1) |
(C++23 起) |
| 两个 basic_const_iterator 之间的关系比较 |
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constexpr bool operator<( const basic_const_iterator& y ) const
requires std::random_access_iterator<Iter>;
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(2) |
(C++23 起) |
constexpr bool operator>( const basic_const_iterator& y ) const
requires std::random_access_iterator<Iter>;
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(3) |
(C++23 起) |
constexpr bool operator<=( const basic_const_iterator& y ) const
requires std::random_access_iterator<Iter>;
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(4) |
(C++23 起) |
constexpr bool operator>=( const basic_const_iterator& y ) const
requires std::random_access_iterator<Iter>;
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(5) |
(C++23 起) |
constexpr auto operator<=>( const basic_const_iterator& y ) const
requires std::random_access_iterator<Iter> && std::three_way_comparable<Iter>;
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(6) |
(C++23 起) |
| basic_const_iterator 和另一类型之间的关系比较
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template< /*different-from*/<basic_const_iterator> I >
constexpr bool operator<( const I& y ) const
requires std::random_access_iterator<Iter> && std::totally_ordered_with<Iter, I>;
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(7) |
(C++23 起) |
template< /*different-from*/<basic_const_iterator> I >
constexpr bool operator>( const I& y ) const
requires std::random_access_iterator<Iter> && std::totally_ordered_with<Iter, I>;
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(8) |
(C++23 起) |
template< /*different-from*/<basic_const_iterator> I >
constexpr bool operator<=( const I& y ) const
requires std::random_access_iterator<Iter> && std::totally_ordered_with<Iter, I>;
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(9) |
(C++23 起) |
template< /*different-from*/<basic_const_iterator> I >
constexpr bool operator>=( const I& y ) const
requires std::random_access_iterator<Iter> && std::totally_ordered_with<Iter, I>;
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(10) |
(C++23 起) |
template< /*different-from*/<basic_const_iterator> I >
constexpr auto operator<=>( const I& y ) const
requires std::random_access_iterator<Iter> &&
std::totally_ordered_with<Iter, I> &&
std::three_way_comparable_with<Iter, I>;
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(11) |
(C++23 起) |
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比较 basic_const_iterator 和另一个值。
!= 运算符从 operator== 运算符合成。
当 std::same_as<I, basic_const_iterator<Iter>> 为 false 时 I 满足 /*different-from*/<basic_const_iterator>。
参数
返回值
1) base() == s
2) base() < y.base()
3) base() > y.base()
4) base() <= y.base()
5) base() >= y.base()
6) base() <=> y.base()
7) base() < y
8) base() > y
9) base() <= y
10) base() >= y
11) base() <=> y
注解
当 Iter 实现了 sentinel_for<Iter> 时,重载 (1) 可用于比较两个 basic_const_iterator<Iter> 值。
示例
参阅