Luna::includes

template <typename _InputIt1, typename _InputIt2>
bool includes(_InputIt1 first1, _InputIt1 last1, _InputIt2 first2, _InputIt2 last2)

Checks if the sorted range [first2, last2) is a subsequence of the sorted range [first1, last1). (A subsequence need not be contiguous.)

Parameters

• in first1

  The iterator to the first element of the first range.

• in last1

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

• in first2

  The iterator to the first element of the second range.

• in last2

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

Return value

Returns true if the sorted range [first2, last2) is a subsequence of the sorted range [first1, last1). Returns false otherwise.

Valid Usage

• Elements in the ranges specified by [first1, last1) and [first2, last2) must be sorted in non-descending order.