Abstract The theory of Dynamic Frames has been invented to deal with the frame problem in the presence of encapsulation and pointers. It has proved more flexible and conceptually simpler than previous approaches that tackled the problem. It is now being actively used both for theoretical and for practical purposes related to the formal verification of program correctness. This paper presents the full theory of Dynamic Frames, together with its reasoning laws and exemplifies the use of these laws in proving correct several common design patterns. It also discusses the ongoing research on the topic.

Abstract The embedding of a small but expressive language of multidimensional functional programming in a well known and widely used language of object‐oriented programming leads to the combination of two radically different programming models. In this paper, we formally define the syntax and semantics of GLU♮, which can be thought of as the multidimensional core of Lucid and GLU, and we describe its implementation as a language embedded in C++. With the aid of a few examples, we argue that the marriage of the two programming models is not only compatible and natural, but also that it produces a new and interesting hybrid language. Copyright © 2004 John Wiley & Sons, Ltd.