Throws: Any exception thrown by the copy constructor of RandomAccessIterator1,
or by the default constructor, copy constructor, or the copy assignment operator of the value type of RandomAccessIterator1,
or the copy constructor or operator() of BinaryPredicate or Hash.
May throw bad_alloc if additional memory needed for internal data structures cannot be allocated.
i is the first iterator
in the range [first, last -(pat_last_ - pat_first_)) such that
for every non-negative integer n less than pat_last_ - pat_first_
the following condition holds:
pred(*(i + n), *(pat_first_ + n))!=false, and