Eugene E. McDonnell

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Toronto NOTE: In this paper we use the linguistic terms verb and pronoun interchangeably with the mathematical terms function and variable. INTRODUCTION In standard APL [ISOSS] certain forms are ungrammatical, and new definitions could be adopted for them without conflict. Such definitions we shall call phrasal form [AHD76]. For example, if b and c are(More)
This paper describes a series of functions for performing Conway's game of Life [Ga70] in APL, beginning with versions that go back to the early 1970's. The paper doesn't deal with the game itself, but rather with the expressive power of various approaches, and particularly with the increased expressiveness found in some of the new operator extensions to(More)
This paper is a progress report on work undertaken to include tree data structures by means of the boxed data type available in J. Methods for displaying these boxed arrays as trees are shown. This work is part of a larger effort to provide a comprehensive set of facilities in J for working with tree structures. The facilities described were at first(More)
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