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1、PreparedexclusivelyforRonBrownWhatReadersAreSayingAboutMetaprogrammingRubyReadingthisbookwaslikedivingintoanewworldofthinking.ItriedamixofJavaandJRubymetaprogrammingonarecentproject.UsingJavaalonewouldnowfeellikeenteringaswordfightcarryingonlyabanana,whenmyopponentiswielding
2、aone-meter-longSamuraiblade.SebastianHennebrüderJavaConsultantandTrainer,laliluna.deThisRubybookfillsagapbetweenlanguagereferencemanualsandprogrammingcookbooks.Notonlydoesitexplainvariousmeta-programmingfacilities,butitalsoshowsapragmaticwayofmakingsoftwaresmallerandbetter.T
3、here’sacaveat,though;whenthenewknowledgesinksin,programminginmoremainstreamlanguageswillstartfeelinglikeachore.JurekHusakowskiSoftwareDesigner,PhilipsAppliedTechnologiesBeforethisbook,I’dneverfoundaclearorganizationandexplanationofconceptsliketheRubyobjectmodel,closures,DSL
4、sdefinition,andeigenclassesallspicedwithreal-lifeexamplestakenfromthegemsweusuallyuseeveryday.Thisbookisdefinitelyworthreading.CarloPecchiaSoftwareEngineerI’vehadalotoftroublefindingagoodwaytopickupthesemeta-programmingtechniques,andthisbookisbarnonethebestwaytodoit.PaoloPerro
5、ttamakesitpainlesstolearnRuby’smostcomplexsecretsandusetheminpracticalapplications.ChrisBunchSoftwareEngineerPreparedexclusivelyforRonBrownMetaprogrammingRubyProgramLiketheRubyProsPaoloPerrottaThePragmaticBookshelfRaleigh,NorthCarolinaDallas,TexasPreparedexclusivelyforRonBr
6、ownManyofthedesignationsusedbymanufacturersandsellerstodistinguishtheirprod-uctsareclaimedastrademarks.Wherethosedesignationsappearinthisbook,andThePragmaticProgrammers,LLCwasawareofatrademarkclaim,thedesignationshavebeenprintedininitialcapitallettersorinallcapitals.ThePrag
7、maticStarterKit,ThePragmaticProgrammer,PragmaticProgramming,PragmaticBookshelfandthelinkinggdevicearetrademarksofThePragmaticProgrammers,LLC.Everyprecautionwastakeninthepreparationofthisbook.However,thepublisherassumesnoresponsibilityforerrorsoromissions,orfordamagesthatmay
8、resultfromtheuseofinformation(includingprogramlistings)containedherein.OurPragmati
