Donna is writing a program for her book store that will help her monitor inventory. She has many different kinds of books (ficti
on, non-fiction, textbooks, cookbooks, etc.) that all require different types of data. She has noticed, however, that several pieces of data are the same no matter which type of book she is selling: title and price. She creates some procedures that report the title and price of a book that she can use with any kind of book she sells. This is an example of what computing principle?
This is an abstraction because Donna generalized a concept — reporting the title or price of a book — to apply to all types of books. Noticing repeated details or common features and removing them is a key element of abstraction.
He said that his father was a cultured man, that he was unsentimental. His father rarely showed his feelings, and was more involved with the welfare of others than with that of his own kin. I'm not sure what the others saw other than him being weak and frail.
