Luna::find_if

template <typename _InputIt, typename _UnaryPredicate>
constexpr _InputIt find_if(_InputIt first, _InputIt last, _UnaryPredicate p)

Searches for the first element in the range that passes the user-provided unary predicate.

Parameters

• in first

  The iterator to the first element of the search range.

• in last

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

• in p

  The user-provided unary predicate which will be called to test elements.

Return value

Returns one iterator to the first element that p(v) is true. Returns last if not found.

Valid Usage

• The expression p(v) must be convertible to bool for every argument v of type VT, where VT is the value type of _InputIt, and must not modify v.