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1、WhereC#FitsInInonesense,C#canbeseenasbeingthesamethingtoprogramminglanguagesas.NETistotheWindowsenvironment.JustasMicrosofthasbeenaddingmoreandmorefeaturestoWindowsandtheWindowsAPIoverthepastdecade,VisualBasicandC++haveundergoneexpansion.AlthoughVisualBasicandC++haveendedupashu
2、gelypowerfullanguagesasaresultofthis,bothlanguagesalsosufferfromproblemsduetothelegaciesofhowtheyhaveevolved?InthecaseofVisualBasic6andearlier,themainstrengthofthelanguagewasthefactthatitwassimpletounderstandanddidn^tmakemanyprogrammingtaskseasy,largelyhidingthedetailsoftheWind
3、owsAPIandtheCOMcomponentinfrastructurefromthedeveloper?ThedownsidetothiswasthatVisualBasicwasnevertrulyobject-oriented,sothatlargeapplicationsquicklybecomedisorganizedandhardtomaintain.Aswellasthis,becauseVisualBasic'ssyntaxwasinheritedfromearlyversionsofBASIC(which,inturn,wasd
4、esignedtobeintuitivelysimpleforbeginningprogrammerstounderstand,ratherthantowritelargecommercialapplications),itdidn'treallylenditselftowell-structuredorobject-orientedprograms.C++,ontheotherhand,hasitsrootsintheANSIC++languagedefinition.ItisiftcompletelyANSIcompliantforthesimp
5、lereasonthatMicrosoftfirstwroteitsC++compilerbeforetheANSIdefinitionhadbecomeofficial,butitcomesclose.Unfortunately,thishasledtotwoproblems.First,ANSIC++hasitsrootsinadecade-oldstateoftechnology,andthisshowsupinalackofsupportformodernconcepts(suchasUnicodestringsandgeneratingXM
6、Ldocumentation),andinsomearchaicsyntaxstructuresdesignedforthecompilersofyesteryear(suchastheseparationofdeclarationfromdefinitionofmemberfunctions).Second,MicrosofthasbeensimultaneouslytryingtoevolveC++intoalanguagethatisdesignedforhigh-performancetasksonWindows,andinordertoac
7、hievethatthey'vebeenforcedtoaddahugenumberofMicrosoft-specifickeywordsaswellasvariouslibrariestothelanguage?TheresultisthatonWindows,thelanguagehasbecomeacompletemess.JustaskC++developershowmanydefinitionsforastringtheycanthinkof:char*,LPTSTR,string,CString(MFCversion),CString(
8、WTLversion),wchart*,OLECHAR*,andsoon.Nowenter.NET一acom
