std::flat_multiset<Key,Compare,KeyContainer>:: lower_bound

From cppreference.com

iterator lower_bound ( const Key & key ) ;
(1) (since C++23)
const_iterator lower_bound ( const Key & key ) const ;
(2) (since C++23)
template < class K >
iterator lower_bound ( const K & x ) ;
(3) (since C++23)
template < class K >
const_iterator lower_bound ( const K & x ) const ;
(4) (since C++23)
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 .

Parameters

key - key value to compare the elements to
x - alternative value that can be compared to Key

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.

Complexity

Logarithmic in the size of the container.

Example

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)