Luna::lower_bound

template <typename _ForwardIt, typename _Ty, typename _Compare>
_ForwardIt lower_bound(_ForwardIt first, _ForwardIt last, const _Ty &value, _Compare comp)

Finds the first element in the range such that comp(element, value) is false.

Parameters

• in first

  The iterator to the first element of the range.

• in last

  The iterator to the one-past-last element of the range.

• in value

  The value to compare elements to.

• in comp

  The user-provided binary predicate which returns ​true if the first argument is less than the second.

Return value

Returns an iterator to the first element in the range such that comp(element, value) is false, or last if no such element is found.

Valid Usage

• Elements in the range specified by [first, last) must be sorted in non-descending order.

• comp must have the following function signature: bool comp(const Type& a, const Type& b), where Type is the value type of _ForwardIt.