Concepts, Techniques, and Models of Computer Programming - Chapter 6 pdf

... Algol -6 0 and structured programming [ 46, 45, 130], which led to Simula -6 7 and object-oriented program- ming [137, 152]. 2 This book sticks to the traditional usage of declarative as stateless and ... organization of the program is good for more than just reason- ing. We will see it many times in the book. We find it again in the component- based programming of Section 6....

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... inside any of the parts that it guards. Copyright c  200 1-3 by P. Van Roy and S. Haridi. All rights reserved. 62 6 Shared-State Concurrency 8 .6. 1 Locks The simplest way to do concurrent programming ... paradigms of message-passing and shared-state concurrency. At the time of writing, we know of no books that deal with the third concurrent paradigm of declarative concurr...

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... CONTENTS xi 8 .6. 1 Locks 62 6 8 .6. 2 Monitors 62 6 8.7 Exercises 62 6 9 Relational Programming 63 3 9.1 Therelationalcomputationmodel 63 5 9.1.1 The choice and fail statements 63 5 9.1.2 Searchtree 63 6 9.1.3 ... Unificationgrammars 66 1 9.5 Agrammarinterpreter 66 2 9.5.1 Asimplegrammar 66 3 9.5.2 Encodingthegrammar 66 3 9.5.3 Running the grammar interpreter . 66 4 9.5.4 Impl...

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... 8 169 9 23885 62 667 00490 715 96 8 264 3 8 162 1 468 59 2 963 8 95217 59999 32299 1 560 8 941 46 39 761 565 18 2 862 5 369 79 20827 22375 82511 85210 9 168 6 40000 00000 00000 00000 00000 Copyright c  200 1-3 by P. ... data-driven and demand-driven evaluation, respectively. Copyright c  200 1-3 by P. Van Roy and S. Haridi. All rights reserved. 16 Introduction to Programming...

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... called imperative programming) which is explained in Chapter 6. The declarative model of this chapter is one of the most fundamental com- putation models. It encompasses the core ideas of the two main ... of many other techniques. This book focuses on three in particu- lar: object-oriented programming, graphical user interface (GUI) design, and component-based programming...

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... instead of standard lists: • Flatten of nil is X#X (empty difference list). • Flatten of X|Xr where X is a nested list, is Y1#Y4 where flatten of X is Y1#Y2, flatten of Xr is Y3#Y4 ,and equate Y2 and ... arguments IsDone and Transform are given one-argument functions. Passing functions as arguments to functions is part of a range of programming techniques called higher-order...

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... lazy concurrent model and gives some of the most important programming techniques, including lazy streams and list compre- hensions. • Soft real-time programming. Section 4 .6 explains how to program ... roots of declarative concurrency. Concurrency is also a key part of three other chapters. Chapter 5 extends the eager model of the present chapter with a simple kind of...

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... in the larger context of component-based programming. Because of message-passing concurrency we no longer have the limitations of the synchronous “lock-step” execution of Chapter 4. We first introduce ... tuples: area({square, Side}) -& gt; Side*Side; area({rectangle, X, Y}) -& gt; X*Y; area({circle, Radius}) -& gt; 3.14159*Radius*Radius; area({triangle, A, B, C}) -& gt;...

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... the 1 960 ’s it has invaded every area of informatics, both in scientific research and technology development. The first object-oriented language was Simula 67 , developed in 1 967 as a descendant of ... descendant of Algol 60 [130, 137, 152]. Simula 67 was much ahead of its time and had little immediate influence. Much more influential in making object-oriented program- ming popul...

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... 4 6 7) path(3 4 6 8) path(2 3 4 6) path(2 5 6 7) path(2 5 6 8) path(1 2 3 4) path(1 2 5 6) path(1 5 6 7) path(1 5 6 8)] The query Q2 has two kinds of calls, generators (the calls to EdgeP)andtesters (the ... product to 6- digit numbers then the naive solution takes 45 seconds. 1 The propagate- and- search solution of Chapter 12 takes less than 0.4 second to solve the sa...

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