std::map::equal_range
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std::pair<iterator,iterator> equal_range( const Key& key ); |
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std::pair<const_iterator,const_iterator> equal_range( const Key& key ) const; |
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返回含有所有元素的范围内,与在容器中的关键
key
。 The range is defined by two iterators, one pointing to the first element that is not less than key
and another pointing to the first element greater than key
. The first iterator may be alternatively obtained with lower_bound()
, the second - with upper_bound()
.原文:
Returns a range containing all elements with key
key
in the container. The range is defined by two iterators, one pointing to the first element that is not less than key
and another pointing to the first element greater than key
. The first iterator may be alternatively obtained with lower_bound()
, the second - with upper_bound()
.目录 |
[编辑] 参数
key | - | 关键值进行比较的元素
原文: key value to compare the elements to |
[编辑] 返回值
std::pair containing a pair of iterators defining the wanted range: the first pointing to the first element that is not less than key
and the second pointing to the first element greater than key
.
If there are no elements not less than key
, past-the-end (see end()
) iterator is returned as the first element. Similarly if there are no elements greater than key
, past-the-end iterator is returned as the second element.
[编辑] 复杂性
Logarithmic in the size of the container.
[编辑] 另请参阅
发现与特定键的元素 (公共成员函数) | |
返回一个迭代器的第一个元素“更大的”超过一定值 原文: returns an iterator to the first element greater than a certain value (公共成员函数) | |
返回一个迭代器的第一个元素“不低于”大于给定值 原文: returns an iterator to the first element not less than the given value (公共成员函数) |