Boleslaw Mikolajzak, Ph .D . Associate Professor of Computer Scienc e University of Massachusetts Dartmout h North Dartmouth, Massachusett s Programs, Recursion and Unbounded Choice . By Wim H. University Press, 1992 . xii+223 pages. ISBN 0-521-40436-3 . $39 .95 . Hesselink . Cambridge Over the last twenty odd years programming has evolved from a black art to a matur e subject that has been described as a science [4], an art [6], a craft [9] and even as a discipline [3] . Despite the diversity of views expressed by the authors cited, there has bee n a remarkable convergence of ideas and methods . This goes beyond recognizing program s as mathematical objects . It is agreed that programs describe functions, that computabl e functions are continuous, in some appropriate sense, that iterative and recursive construct s are to be understood via induction principles, and that logic is permanently wedded to computer science (The official ceremony was performed by Dana Scott at the LICS conferenc e in Asilomar in 1989) . Any list, such as the one I have foolishly attempted above, will be necessarily incomplet e and occasionally misleading . Thus, in particular for operating systems
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