Covariance and Contravariance (computer science) | Type System, Programming Language, Subtype Polymorphism, Category Theory, Covariance and Contravariance of Vectors, Class Hierarchy, Object- oriented Programming, Liskov Substitution Principle.

Frederic P. Miller (u. a.)

ISBN 10: 6130630816 / ISBN 13: 9786130630812

Published by OmniScriptum, 2026

About this Item

Covariance and Contravariance (computer science) | Type System, Programming Language, Subtype Polymorphism, Category Theory, Covariance and Contravariance of Vectors, Class Hierarchy, Object- oriented Programming, Liskov Substitution Principle. | Frederic P. Miller (u. a.) | Taschenbuch | Englisch | 2026 | OmniScriptum | EAN 9786130630812 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu Print on Demand.

Seller Inventory # 101383376

Bibliographic Details

• Title: Covariance and Contravariance (computer science) | Type System, Programming Language, Subtype Polymorphism, Category Theory, Covariance and Contravariance of Vectors, Class Hierarchy, Object- oriented Programming, Liskov Substitution Principle.
• Publisher: OmniScriptum
• Publication Date: 2026
• Language: English
• ISBN 10: 6130630816
• ISBN 13: 9786130630812
• Binding: Taschenbuch
• Condition: Neu
• Dimensions: 220W x 150H x 6D millimeters 220 millimeters width by 150 millimeters height by 6 millimeters depth
• Weight: 149 grams
• Seller catalogs:
  • Bücher

About this title

Synopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. These terms come from category theory, which has a general definition of covariance and contravariance that unifies the computer science definition of these terms with the definition used in vector spaces. This distinction is important in considering argument and return types of methods in class hierarchies. In object-oriented languages such as C++, if class B is a subtype of class A, then all member functions of B must return the same or narrower set of types as A; the return type is said to be covariant. On the other hand, the member functions of B must take the same or broader set of arguments compared with the member functions of A; the argument type is said to be contravariant.