Generalization

noun

say it: “jen-er-ul-ih-ZAY-shun” /ˌdʒɛnərəlɪˈzeɪʃən/

Moving the properties and methods that several classes share up into one base class.

What is Generalization?

Generalization — Spotting what several classes have in common and moving it up into one base class. Book and Magazine both have a title and a price, so those move into LibraryItem, written once.

class LibraryItem { public string Title { get; set; } = ""; public decimal Price { get; set; } }
class Book : LibraryItem { public string Author { get; set; } = ""; }
class Magazine : LibraryItem { public int Issue { get; set; } }

In a sentence

  • “Through generalization, Book and Magazine now share Title and Price from LibraryItem.”

Level: Journeyman · More OOP terms at this level

Updated

In other subjects