Difference between revisions of "cpp/container/multiset/lower bound"
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Latest revision as of 18:18, 29 November 2021
| iterator lower_bound( const Key& key ); |
(1) | |
| const_iterator lower_bound( const Key& key ) const; |
(2) | |
template< class K > iterator lower_bound( const K& x ); |
(3) | (since C++14) |
| template< class K > const_iterator lower_bound( const K& x ) const; |
(4) | (since C++14) |
1,2) Returns an iterator pointing to the first element that is not less than (i.e. greater or equal to) key.
3,4) Returns an iterator pointing to the first element that compares not less (i.e. greater or equal) to the value x. This overload participates in overload resolution only if the qualified-id Compare::is_transparent is valid and denotes a type. It allows calling this function without constructing an instance of
Key.Contents |
[edit] Parameters
| key | - | key value to compare the elements to |
| x | - | alternative value that can be compared to Key
|
[edit] Return value
Iterator pointing to the first element that is not less than key. If no such element is found, a past-the-end iterator (see end()) is returned.
[edit] Complexity
Logarithmic in the size of the container.
Notes
| Feature-test macro | Value | Std | Feature |
|---|---|---|---|
__cpp_lib_generic_associative_lookup |
201304L | (C++14) | Heterogeneous comparison lookup in associative containers; overloads (3,4) |
[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
| returns range of elements matching a specific key (public member function) | |
| returns an iterator to the first element greater than the given key (public member function) |
