ISO IEC 23271-2012 Information technology — Common Language Infrastructure （CLI）

《ISO IEC 23271-2012 Information technology — Common Language Infrastructure （CLI）》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、INTERNATIONALISO/IECSTANDARD23271Thirdedition2012-02-15Informationtechnology—CommonLanguageInfrastructure(CLI)Technologiesdel'information—Infrastructurecommunedelangage(ICL)ReferencenumberISO/IEC23271:2012(E)©ISO/IEC2012ISO/IEC23271:2012(E)COPYRIGHTPROTECTEDDOCUMENT©ISO/IEC201

2、2Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherISOattheaddressbeloworISO'smemberbodyinthecountryoftherequester.ISOcop

3、yrightofficeCasepostale56CH-1211Geneva20Tel.+41227490111Fax+41227490947E-mailcopyright@iso.orgWebwww.iso.orgPublishedinSwitzerlandii©ISO/IEC2012–AllrightsreservedISO/IEC23271:2012(E)TableofContentsForewordxxiI.1Scope1I.2Conformance2I.3Normativereferences3I.4Conventions5I.4.1O

4、rganization5I.4.2Informativetext5I.5Termsanddefinitions6I.6OverviewoftheCommonLanguageInfrastructure9I.6.1Relationshiptotypesafety9I.6.2Relationshiptomanagedmetadata-drivenexecution10I.6.2.1Managedcode10I.6.2.2Manageddata11I.6.2.3Summary11I.7CommonLanguageSpecification12I.7.1I

5、ntroduction12I.7.2ViewsofCLScompliance12I.7.2.1CLSframework12I.7.2.2CLSconsumer13I.7.2.3CLSextender13I.7.3CLScompliance14I.7.3.1MarkingitemsasCLS-compliant14I.8CommonTypeSystem16I.8.1Relationshiptoobject-orientedprogramming19I.8.2Valuesandtypes19I.8.2.1Valuetypesandreferencety

6、pes19I.8.2.2Built-invalueandreferencetypes20I.8.2.3Classes,interfaces,andobjects21I.8.2.4Boxingandunboxingofvalues21I.8.2.5Identityandequalityofvalues22I.8.3Locations23I.8.3.1Assignment-compatiblelocations23I.8.3.2Coercion23I.8.3.3Casting24©ISO/IEC2012–Allrightsreserved.iiiISO

7、/IEC23271:2012(E)I.8.4Typemembers24I.8.4.1Fields,arrayelements,andvalues24I.8.4.2Methods24I.8.4.3Staticfieldsandstaticmethods25I.8.4.4Virtualmethods25I.8.5Naming25I.8.5.1Validnames25I.8.5.2Assembliesandscoping26I.8.5.3Visibility,accessibility,andsecurity27I.8.6Contracts30I.8.6

8、.1Signatures30I.8.7Assignmentcompatibility34I.8.7.1Assignment