Springer.Smalltalk.and.Object.Orientation.An.Introduction.1997.(By.Laxxuss)

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1、SmalltalkandObjectOrientation:AnIntroductionJohnHuntJayDeeTechnologyLtd,HarthamParkCorsham,Wiltshire,SN130RPUnitedKingdomEmail:john.hunt@jaydeetechnology.co.ukhttp://www.jaydeetechnology.co.ukPrefaceThisbookwasoriginallywrittentosupportanintroductory

2、courseinObjectOrientationthroughthemediumofSmalltalk(andVisualWorksinparticular).However,itcanbeusedasabooktoteachthereaderSmalltalk,tointroduceobjectorientationaswellaspresentobjectorienteddesignandanalysis.IttakesasitsbasicpremisethatmostComputerSc

3、ientists/SoftwareEngineerslearnbestbydoingratherthanfromtheoreticalnotes.Thechaptersthereforeattempttointroduceconceptsbygettingyouthereadertodothings,ratherthanbyextensivetheoreticaldiscussions.Thismeansthatthesechapterstakeahands-onapproachtothesub

4、jectandassumethatthestudent/readerhasasuitableSmalltalkenvironmentavailabletothem.Thechaptersarelistedbelowandaredividedintosixparts.ThereaderisadvisedtoworkthroughParts1and3thoroughlyinordertogainadetailedunderstandingofobjectorientation.Part2thenpr

5、ovidesanintroductiontotheSmalltalkenvironmentandlanguage.Otherchaptersmaythenbedippedintoasrequired.Forexample,ifthereaderwishestohonetheirSmalltalkskillsthenthechaptersinPart4wouldbeuseful.However,ifatthatpointtheywishtogetonanddiscoverthedelightsof

6、graphicaluserinterfacesinSmalltalk,thenPart5couldbereadnext.Part6presentssomemoreadvancessubjectssuchasmetaclassesandconcurrencywhicharenotrequiredforstraightforwardSmalltalkdevelopment.ContentSummaryPart1:IntroductiontoObjectOrientationChapter1:Intr

7、oductiontoObjectOrientationTheaimofthischapteristoprovideanintroductiontotherangeofconceptsandideaswhichmakeupobjecttechnology.ItpresentsthebackgroundwhichledtotheacceptanceofobjectorientationasamainstreamtechnologyanddiscussesthepedigreeoftheSmallta

8、lklanguage.Chapter2:ElementsofObjectOrientationThischapterprovidesamoreformaldefinitionoftheterminologyintroducedinChapter1.Italsoconsiderstheadvantagesanddisadvantagesofanobjectorientedapproachcomparedtomoretraditionalproceduralapproaches.Chapter3:C