Ruby: require vs require_relative - best practice
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: WhatisthebestpracticeifIwanttorequirearelativefileinRubyandIwantittoworkinboth1.8.xand>=1.9.2? Iseeafewoptions:......
What is Rack middleware?
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: WhatisRackmiddlewareinRuby?Icouldn'tfindanygoodexplanationforwhattheymeanby"middleware". 回答1: RackasDesign Rackmid......
Why am I getting objects printed twice?
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: WhenIaminirborinrailsandIcreatesomeiterationwitheach,Iamgettingthewholestructprintedagaininmyterminalorinsidethe......
What does map(&:name) do in this Ruby code?
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: TryingtounderstandRubyabitbetter,IranintothiscodesurfingtheInternet: require'rubygems' require'activeresource' ActiveReso......
How can I use Ruby/Rails variables inside Sass?
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: IsthereawaytousevariablesfrommyRubyapplicationinsideaSassfile? 回答1: Youcanadd.erbextentiontoyour.sassfileandthe......
Why are gems installed in a directory with a diffe
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: WhenIinstallagem,itgetsinstalledinadirectorynamed1.9.1,despitethatnotbeingtheversionofRubyIhaveinstalled: $ruby-v r......
naked asterisk as parameter in method definition:
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: Iknowwhatthismeans: deff(*args) ... end Butwhatdoesthismeanandwhywouldyouwanttouseit?Canitappearwithnamedparamet......
usage of attr_accessor 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: Whendoyouuseattr_reader/attr_writer/attr_accessorinRailsmodels? 回答1: attr_accessorcanbeusedforvaluesyoudon'twanttostor......
Why does string interpolation work in Ruby when th
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: TheproperwaytousestringinterpolationinRubyisasfollows: name="NedStark" puts"Hellothere,#{name}"#=>"Hellothere,NedSta...
Mixing keyword with regular arguments 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: Ruby2.0supportskeywordarguments.Iwaswondering,whatarethe'rules'formixingregularwithkeywordarguments?Somethinglikethiswou......
Methods in Ruby: objects or not?
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: Inspiredbythisdiscussion,aftersomegooglingIwasn'tabletofindananswertoaprettysimplequestionregardingmethodsinRuby:arem......
How does object_id assignment work?
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: I'mplayingaroundwithRuby's.object_idandnoticedthat,inseveralsequentialsessionsofirb,Igettheseidenticalresults: false.obj......
what is the functionality of “&: ” operator in rub
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: PossibleDuplicate: Whatdoesmap(&:name)meaninRuby? Icameacrossacodesnippetwhichhadthefollowing a.each_slice(2).map(......
what's different between each and collect meth
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: Thisquestionalreadyhasananswerhere: Array#eachvs.Array#map 6answ......
Convert a Nokogiri document to a Ruby Hash
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: IsthereaneasywaytoconvertaNokogiriXMLdocumenttoaHash? SomethinglikeRails'Hash.from_xml. 回答1: Iusethiscodewithlibx......
In Ruby, what's the relationship between '
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: WhatIwantis: obj=Foo.new(0)#=>nilorfalse Thisdoesn'twork: classFoo definitialize(val) returnnilifval==0 end e......
Ruby's File.open and the need for f.close
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: It'scommonknowledgeinmostprogramminglanguagesthattheflowforworkingwithfilesisopen-use-close.YetIsawmanytimesinrubycode......
How to count duplicate elements in a Ruby array
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: Ihaveasortedarray: [ 'FATAL<errortitle="Requesttimedout.">', 'FATAL<errortitle="Requesttimedout.">', 'FATAL<e...
How to determine if one array contains all element
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: Given: a1=[5,1,6,14,2,8] Iwouldliketodetermineifitcontainsallelementsof: a2=[2,6,15] Inthiscasetheresultisfa......
No increment operator (++) in Ruby? [duplicate]
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: PossibleDuplicate: Whydoesn'tRubysupporti++ori—forfixnum? WhyistherenoincrementoperatorinRuby? e.g. i+......
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