[Programming.Perl(4th,2012.2)].Tom.Christiansen.文字版

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1、FOURTHEDITIONProgrammingPerlTomChristiansen,briandfoy&LarryWallwithJonOrwantBeijing•Cambridge•Farnham•Köln•Sebastopol•TokyoProgrammingPerl,FourthEditionbyTomChristiansen,briandfoy&LarryWall,withJonOrwantCopyright©2012TomChristiansen,briandfoy,LarryWall,andJonOrwant.Allrightsreserved.Prin

2、tedintheUnitedStatesofAmerica.PublishedbyO’ReillyMedia,Inc.,1005GravensteinHighwayNorth,Sebastopol,CA95472.O’Reillybooksmaybepurchasedforeducational,business,orsalespromotionaluse.Onlineeditionsarealsoavailableformosttitles(http://my.safaribooksonline.com).Formoreinformation,contactourco

3、rporate/institutionalsalesdepartment:(800)998-9938orcorporate@oreilly.com.Editor:AndyOramCoverDesigner:KarenMontgomeryProductionEditor:HollyBauerInteriorDesigner:DavidFutatoProofreader:MarloweShaefferIllustrator:RobertRomanoIndexer:LucieHaskinsJanuary1991:FirstEdition.September1996:Secon

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5、a,Inc.ProgrammingPerl,theimageofadromedarycamel,andrelatedtradedressaretrademarksofO’ReillyMedia,Inc.Manyofthedesignationsusedbymanufacturersandsellerstodistinguishtheirproductsareclaimedastrademarks.Wherethosedesignationsappearinthisbook,andO’ReillyMedia,Inc.,wasawareofatrademarkclaim,t

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7、eface...................................................................xxiiiPartI.Overview1.AnOverviewofPerl.....................................................3GettingStarted3NaturalandArtificialLanguages4VariableSyntax5Verbs17AnAverageExample18HowtoDoIt20Filehandles21