Book Chapter

Abstract and Concrete Data Types vs Object Capabilities

James Noble, Alex Potanin, T Murray, Mark S Miller

Principled Software Development: Essays Dedicated to Arnd Poetzsch-Heffter on the Occasion of his 60th Birthday | Springer | Published : 2018

Abstract

The distinctions between the two forms of procedural data abstraction—abstract data types and objects—are well known. An abstract data type provides an opaque type declaration, and an implementation that manipulates the modules of the abstract type, while an object uses procedural abstraction to hide an individual implementation. The object-capability model has been proposed to enable object-oriented programs to be written securely, and has been adopted by a number of practical languages including JavaScript, E, and Newspeak. This chapter addresses the questions: how can we implement abstract data types in an object-capability language? and, how can we incorporate primitive concrete data typ..

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