Concepts, Techniques, and Models of Computer Programming - Chapter 5 pptx

... 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; 3.14 159 *Radius*Radius; area({triangle, A, B, C}) -& g...

Ngày tải lên: 14/08/2014, 10:22

... with single-shot channels. Chapters 4 and 5 show other types of channels (with sequences of messages) and do concurrent composition of processes. Copyright c  200 1-3 by P. Van Roy and S. Haridi. ... of many other techniques. This book focuses on three in particu- lar: object-oriented programming, graphical user interface (GUI) design, and component-based programming. I...

Ngày tải lên: 14/08/2014, 10:22

... it is the most general model of the book. It covers all the computation models of the book ex- cept for the relational and constraint-based models. The semantics of each earlier model, e.g., ... end . Copyright c  200 1-3 by P. Van Roy and S. Haridi. All rights reserved. 13.1 The shared-state concurrent model 7 85 13.1.1 The store The store consists of two parts: a single-a...

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... 200 1-3 by P. Van Roy and S. Haridi. All rights reserved. x CONTENTS 7 .5 Relationtoothercomputationmodels 54 3 7 .5. 1 Object-basedandcomponent-basedprogramming 54 3 7 .5. 2 Higher-orderprogramming 54 4 7 .5. 3 ... 54 8 7.24Abstractionsinobject-orientedprogramming 55 3 7. 25 An example class Counter (again) 55 4 7.26Anexampleofclassconstruction 55 5 7.27Anexampleofobjectconstruc...

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... display a huge number: 933 262 15 44394 4 152 6 81699 238 85 62667 00490 7 159 6 82643 81621 46 859 29638 952 17 59 999 32299 156 08 94146 39761 56 518 286 25 36979 20827 223 75 8 251 1 852 10 91686 40000 00000 00000 ... Wizard of Oz, L. Frank Baum (1 856 –1919) Programming is telling a computer how it should do its job. This chapter gives a gentle, hands-on introduction to man...

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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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... execution. Section 4 .5 introduces the lazy concurrent model and gives some of the most important programming techniques, including lazy streams and list compre- hensions. • Soft real-time programming. ... 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...

Ngày tải lên: 14/08/2014, 10:22

... Algol-60 and structured programming [46, 45, 130], which led to Simula-67 and object-oriented program- ming [137, 152 ]. 2 This book sticks to the traditional usage of declarative as stateless and ... elements of an array: Copyright c  200 1-3 by P. Van Roy and S. Haridi. All rights reserved. 4 15 A problem of terminology Stateless and stateful programming are often ca...

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... triangle and a circle: declare F1={New CompositeFigure init} {F1 add({New Line init(Can 50 50 150 50 )})} {F1 add({New Line init(Can 150 50 100 1 25) })} {F1 add({New Line init(Can 100 1 25 50 50 )})} {F1 ... that the underlying language is object-oriented [58 , 159 ]. With Copyright c  200 1-3 by P. Van Roy and S. Haridi. All rights reserved. 53 6 Object-Oriented Programming...

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... Displays 50 50 for I in 1 1000 do thread {Mix} end end {Browse {Sum}} % Still displays 50 50 50 50 is the sum of the integers from 1 to 100. You can check that the values of individual cells are well and ... 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 concu...

Ngày tải lên: 14/08/2014, 10:22