design_patterns-Jason McDonald.pdf

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1、mtechfactsatyourfingertipsCONTENTSINCLUDE:nChainofResponsibilitynCommandrefcardz.conInterpreterDesignPatternsnIteratornMediatornObserverByJasonMcDonaldnTemplateMethodandmore...ExampleABOUTDESIGNPATTERNSExceptionhandlinginsomelanguagesimplementsthispattern.Whenanexceptionisthrowninamethodthe

2、runtimecheckstoThisDesignPatternsrefcardprovidesaquickreferencetoseeifthemethodhasamechanismtohandletheexceptionortheoriginal23GangofFourdesignpatterns,aslistedintheifitshouldbepassedupthecallstack.WhenpassedupthecallbookDesignPatterns:ElementsofReusableObject-Orientedstacktheprocessrepeats

3、untilcodetohandletheexceptionisSoftware.Eachpatternincludesclassdiagrams,explanation,encounteredoruntiltherearenomoreparentobjectstohandusageinformation,andarealworldexample.therequestto.CreationalPatterns:UsedtoconstructobjectssuchthatCOMMANDObjectBehavioraltheycanbedecoupledfromtheirimple

4、mentingsystem.StructuralPatterns:UsedtoformlargeobjectstructuresClientInvokerbetweenmanydisparateobjects.ConcreteCommandBehavioralPatterns:Usedtomanagealgorithms,+execute()relationships,andresponsibilitiesbetweenobjects.ObjectScope:DealswithobjectrelationshipsthatcanbeCommandReceiver+execut

5、e()changedatruntime.SubscribeNowforFREE!ClassScope:DealswithclassrelationshipsthatcanbechangedPurposematcompiletime.Encapsulatesarequestallowingittobetreatedasanobject.ThisallowstherequesttobehandledintraditionallyobjectCAbstractFactorySDecoratorCPrototypebasedrelationshipssuchasqueuingandc

6、allbacks.e.coSAdapterSFacadeSProxyUseWhenSBridgeCFactoryMethodBObserverzonnYouneedcallbackfunctionality.CBuilderSFlyweightCSingletond.nRequestsneedtobehandledatvarianttimesorinvariantorders.BChainofBInterpreterBStatewnAhistoryofrequestsisneeded.ResponsibilityBIteratorBStrategynTheinvokersho

7、uldbedecoupledfromtheobjecthandlingtheBCommandBMediatorBTemplateMethodinvocation.wwSCompositeBMementoBVisitorExampleJobqueuesarewidelyusedtofacilitatetheasynchronousCHAINOFRESPONSIBILITYObjectBehavioralprocessingofalgorithms.Byutilizingthecommandpatternt