Foundations of Object-Oriented Languages: Types and Semantics

[LeeAndro]

Kim B. Bruce | 2002 | ISBN: 026202523X | English | 404 pages | PDF | 10 MB​

In recent years, object-oriented programming has emerged as the dominant computer programming style, and object-oriented languages such as C and Java enjoy wide use in academia and industry. This text explores the formal underpinnings of object-oriented languages to help the reader understand the fundamental concepts of these languages and the design decisions behind them.

The text bs by analyzing existing object-oriented languages, paying special attention to their type systems and impediments to expressiveness. It then examines two key features: subtypes and subclasses. After a brief introduction to the lambda calculus, it presents a prototypical object-oriented language, SOOL, with a simple type system similar to those of class-based object-oriented languages in common use. The text offers proof that the type system is sound by showing that the semantics preserves typing information. It concludes with a discussion of desirable features, such as parametric polymorphism and a MyType construct, that are not yet included in most statically typed object-oriented languages.



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