Method ADT.Sequence()->first()
- Method first
 SequenceIteratorfirst()- Description
 Create and initiate a new SequenceIterator that could be used to iterate over this sequence.
- Returns
 An iterator positioned at the first element in the sequence.
SequenceIterator first()
Create and initiate a new SequenceIterator that could be used to iterate over this sequence.
An iterator positioned at the first element in the sequence.