Smalltalk and Object Orientation: an Introduction - Free

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This is a very simple algorithm, but it works! The actual implementation of this algorithm is not quite as tidy. It is presented below: slice | aPriority list | aPriority := self highestPriority. "Find highest priority level with processes in it" [aPriority > O and: [(quiescentProcessLists at: aPriority) size
31.4.3 Acknowledgments Acknowledgments are made to Hubert Baumeister, of the University of Dortmund, Germany, who developed the original example. This was from an original idea put forward by Kent Williams of the University of Iowa. 31.5 Further reading A good article on writing concurrent Smalltalk programs is [Hopkins and Wolczko 1989]. Lazy and future evaluators can also be implemented using these facilities. A good discussion on such evaluators can be found in [LaLonde and Pugh 1993]. 267
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Smalltalk and Object Orientation: A
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Chapter 7: Smalltalk Constructs Thi
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The user interface construction fac
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Preface 1. INTRODUCTION TO OBJECT O
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12.5 A CLASS SIDE METHOD...........
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27.3 VISUALWORKS WINDOW PAINTING TO
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Part One Introduction to Object Ori
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interfaces between different parts
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een to ease the transition from one
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encapsulation. Attempting to introd
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is a controversial subject which is
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will become second nature to many o
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or return something. It has since b
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defining the behavior of different
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In time most developers start to ac
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2.4.3.4 Smalltalk environments are
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3. Constructing an Object Oriented
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Wash wipe switch Wiper motor Relay
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Point 2 above is more complicated.
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services working? working? working?
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Part Two The Smalltalk Language 42
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other systems. As the browsers, ins
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VisualAge (a version of Smalltalk w
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4.5.2 The VisualWorks Launcher and
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Class categories. These are group s
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5. A Little Smalltalk 5.1 Introduct
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Notifiers can be displayed under a
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These concepts of messages, receive
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Select the “Debug” option. This
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6. Smalltalk Building Blocks 6.1 In
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6.3.1 Class definitions In Smalltal
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Object Class1 Class 2 method search
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“Now calculate y “ y := x * 23.
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7. Smalltalk Constructs 7.1 Introdu
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They are more efficient for storage
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7.5.3 true, false and nil variables
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anArray at: 1 max: 10. This will tr
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Figure 8.1: Defining a new class 8.
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this convention at the moment, howe
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9. Control and Iteration 9.1 Introd
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9.3.3 Block temporary variables Blo
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The brackets round the 1 to: 10 are
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OrderedCollection class (respective
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holding other objects. Typically, c
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| temp | temp := Set new. temp add:
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Next we will define a message proto
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11. Further Collection Classes 11.1
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for (i = 0; i
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x inspect. This has some similariti
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11.9.3 The reject: message The reje
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• asSortedCollection. This create
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Figure 12.2: The Organizer class de
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12.6 The private-updating protocol
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do: [:item | Transcript show: item
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13. Streams and Files 13.1 Introduc
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Notice that in this example we used
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to reconstruct the data into object
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1. The ability to save the current
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14.3 The class Date Class Date, a s
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aCharacter isAlphabetic. aCharacter
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Breakpoints may be placed in a me t
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If the file does not exist you will
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Figure 15.4: Creating a project To
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Part Three Object Oriented Design 1
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16. Object Oriented Analysis and De
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devolved amongst the objects). This
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driving force behind the whole of t
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17. The Unified Modeling Language 1
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Deployment diagrams . Deployment di
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Window abstract +size : Area = (10,
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Micro Computer 1.. * Monitor System
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connectedTo * Lamp * Weight Sensor
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18. UML: Dynamic Modeling And Deplo
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edisplay() Controller window A Wind
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18.2.3.1 A start point A start poin
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etween nodes and their stereotype.
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OMT is a prescriptive method, it pr
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confirming the users’ needs, thei
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19.3.2.2 Prepare a data dictionary
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car, truck and bus under a supercla
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20.2.1.3 Prepare sequence and colla
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20.2.2.5 Specify optimization crite
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are therefore concurrent and can be
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20.3.2.3 Design optimization The an
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21. Frameworks and Patterns for Obj
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As the framework takes shape you sh
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about a set of classes, than to att
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instanceVariableNames: '' classVari
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21.5.5 Running the editor You have
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Part Four Testing and Style 181
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made worse, because the symbol held
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22.3.2 Incremental testing Incremen
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control the execution of the method
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22.7.2 The Perform: message The per
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From the scenario that a person mig
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23.4 Self testing An approach, sugg
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24. Smalltalk Style Guidelines 24.1
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24.2.4 Adding variables to system c
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should use a dictionary to hold the
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• A method should only send messa
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Table 24.2: Class message categorie
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25. The Perform and Dependency Mech
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• Inheritance (class to class rel
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You can find the methods which impl
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These messages are sent automatical
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26. The Model-View-Controller Archi
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Page 217 and 218: Figure 26.5: Part of the Controller
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Page 221 and 222: displayed. The second component add
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Page 233 and 234: 27.11 Visual reuse The aim of visua
Page 235 and 236: Figure 27.17: Defining the parent c
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Page 239 and 240: 28.3 The AddressBook class 28.3.1 T
Page 241 and 242: The aspect methods can then be simp
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Page 245 and 246: 29.2 The custom view widget 29.2.1
Page 247 and 248: DrawingView model SmallDraw drawing
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Page 251 and 252: The next method we shall consider i
Page 253 and 254: In the updating protocol we need to
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Page 257 and 258: 30. Memory Management and Garbage C
Page 259 and 260: 30.3.3 PermSpace This is used to ho
Page 261 and 262: 31. Concurrency in Smalltalk 31.1 I
Page 263 and 264: The Semaphore class provides facili
Page 265: Once the process wakes up it can de
Page 269 and 270: “There are two kinds of objects i
Page 271 and 272: Object Object class Collection Coll
Page 273 and 274: ehavior, but from the point of view
Page 275 and 276: 32.5.5 The whole enchilada Behaviou
Page 278 and 279: 33. The Future for Object Technolog
Page 280 and 281: solutions are needed which suit the
Page 282 and 283: scripting and query language to use
Page 284 and 285: 34. Appendix: The Smalltalk Languag
Page 286 and 287: A capitalization convention is used
Page 288 and 289: • marries: is the message selecto
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Page 292 and 293: [Coleman et al 1994] D. Coleman, P.
Page 294 and 295: OOPSLA/ECOOP’90, Joint Conference
Page 296 and 297: detect.............................
Page 298: True...............................
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