Sequences

Computers are really good at dealing with large amounts of information. They can repeat a task over and over again without getting bored. When they repeat a task they are generally doing the same thing to similar data or objects. It is natural to want to organize those objects into some kind of structure so that our program can easily switch from one object to the next. How objects are added to a sequenceSequence or collection and how we move from one item to the next has some impact on how we might want to organize the collection of data in a program.