=== vs. == in Ruby
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: InRuby,whatisthedifferencebetween==and===?TheRDocsays CaseEquality—ForclassObject, effectivelythesameascalling#==......
How do I debug Ruby scripts?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: IcopiedthefollowingRubycodefromtheInternetandmadeafewchanges. #insertcodehere Butitdoesn\'twork! Pleasehelp.Whatcan......
How to prevent browser page caching in Rails
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Ubuntu->Apache->PhusionPassenger->Rails2.3 Themainpartofmysitereactstoyourclicks.So,ifyouclickonalink,itwillsend......
How to find where a method is defined at runtime?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Werecentlyhadaproblemwhere,afteraseriesofcommitshadoccurred,abackendprocessfailedtorun.Now,weweregoodlittleboysandg......
What's the difference between equal?, eql?, ==
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Iamtryingtounderstandthedifferencebetweenthesefourmethods.Iknowbydefaultthat==callsthemethodequal?whichreturnstruewhe......
Why doesn't Ruby support i++ or i— (increment/
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Thepre/postincrement/decrementoperator(++and--)areprettystandardprograminglanguagesyntax(forproceduralandobject-orientedlang......
Rails :include vs. :joins
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Thisismoreofa\"whydothingsworkthisway\"questionratherthana\"Idon\'tknowhowtodothis\"question... Sothegospelonpulli......
Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: ThelatestchangesetstoRuby1.9.2nolongermakethecurrentdirectory.partofyourLOAD_PATH.Ihaveanon-trivialnumberofRakefilest......
How to change default timezone for Active Record i
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Inmyapplication.rbIcameacrossthefollowingcomment #SetTime.zonedefaulttothespecifiedzoneandmakeActiveRecordauto-convertt......
How to write a switch statement in Ruby
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: HowdoIwriteaswitchstatementinRuby? 回答1: Rubyusesthecaseexpressioninstead. casex when1..5 \"It\'sbetween1and5\" wh......
Why is division in Ruby returning an integer inste
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Forexample: 9/5#=>1 butIexpected1.8.HowcanIgetthecorrectdecimal(non-integer)result?Whyisitreturning1atall? 回......
Parsing a JSON string in Ruby
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: IhaveastringthatIwanttoparseinRuby: string=\'{\"desc\":{\"someKey\":\"someValue\",\"anotherKey\":\"...
Can't install Ruby under Lion with RVM – GCC i
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: MostquestionsregardingthisproblemareduetomissingXcode;IhaveXcode4.2installed. Installattempt: rvminstall1.9.3 InstallingR......
Ruby, Difference between exec, system and %x() or
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: WhatisthedifferencebetweenthefollowingRubymethods? exec,systemand%x()orBackticks Iknowtheyareusedtoexecuteterminalcomm......
How to avoid joining all text from Nodes when scra
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: WhenIscrapeseveralrelatednodesfromHTMLorXMLtoextractthetext,allthetextisjoinedintoonelongstring,makingitimpossiblet......
What is the Ruby <=> (spaceship) operator?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: WhatistheRuby<=>(spaceship)operator?Istheoperatorimplementedbyanyotherlanguages? 回答1: Perlwaslikelythefirstlanguage......
Difference between rake db:migrate db:reset and db
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Thedifferencebetweenrakedb:migrateandrakedb:resetisprettyclearinmyhead.ThethingwhichIdon\'tunderstandishowrakedb:schem......
Can you supply arguments to the map(&:method) synt
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: You\'reprobablyfamiliarwiththefollowingRubyshorthand(aisanarray): a.map(&:method) Forexample,trythefollowinginirb: >>a=......
Why use Ruby's attr_accessor, attr_reader and
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Rubyhasthishandyandconvenientwaytoshareinstancevariablesbyusingkeyslike attr_accessor:var attr_reader:var attr_writer:var ......
How do I get the current absolute URL in Ruby on R
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: HowcanIgetthecurrentabsoluteURLinmyRubyonRailsview? Therequest.request_urionlyreturnstherelativeURL. 回答1: ForRails......
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