Using Rails serialize to save hash to database
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'mtrytosaveahashmappingidstoanumberofattemptsinmyrailsapp.Mymigrationtothedatabasetoaccommodatethisnewcolumn: cla......
ActiveRecord.find(array_of_ids), preserving order
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: WhenyoudoSomething.find(array_of_ids)inRails,theorderoftheresultingarraydoesnotdependontheorderofarray_of_ids. Istherea......
Why does Ruby have both private and protected 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: BeforeIreadthisarticle,IthoughtaccesscontrolinRubyworkedlikethis: public-canbeaccessedbyanyobject(e.g.Obj.new.public_......
Error to install Nokogiri on OSX 10.9 Maverick?
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: IupgradedmyOSX(Lion)toMavericksandIcan'tinstallNokogiriformyprojects. IalreadyinstallXCode5.0.1,CommandLineTools(usi......
Rails :dependent => :destroy VS :dependent => :del
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: Inrailsguidesit'sdescribedlikethis: Objectswillbeinadditiondestroyedifthey’reassociatedwith:dependent=>:destroy,andd......
Continuously read from STDOUT of external process
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: Iwanttorunblenderfromthecommandlinethrougharubyscript,whichwillthenprocesstheoutputgivenbyblenderlinebylinetoupdate......
Best way to require all files from a directory in
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: What'sthebestwaytorequireallfilesfromadirectoryinruby? 回答1: Howabout: Dir["/path/to/directory/*.rb"].each{|file|requir......
What does %w(array) mean?
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'mlookingatthedocumentationforFileUtils.I'mconfusedbythefollowingline: FileUtils.cp%w(cgi.rbcomplex.rbdate.rb),'/usr/lib/ru......
Ruby Block Syntax Error [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: Rubyblockandunparenthesizedarguments I'mnotsureIunderstandthissyntaxerror.I'musingCarrierwaveto......
Ruby multiline block without do end
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’mabeginnerinRuby,soI’msorrytoasksomethingsosimple,butisthereanythingwrongwiththiscode– 3.upto(9){ print"Hello......
Is there an efficient way to perform hundreds of t
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'mtryingtousealistofhundredsofcommonmisspellingstocleansomeinputbeforesearchingforduplicates. It'satime-criticalproc......
Ruby operator precedence table
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: Showmeadefinitive,peer-reviewed/maintainedRubyprecedencetable(ofoperators,non-operators,andmodifiers). OvertheyearsIhavehad......
How to create a deep copy of an object 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: Ididsomesearchingfoundsomedifferentmethodsandpostsaboutcreatingadeepcopyoperator. Isthereaquickandeasy(built-in)wayto......
Is Hash Rocket deprecated?
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: Thewell-citedRIPHashrocketpostwouldseemtoimplytheHashRocketsyntax(:foo=>"bar")isdeprecatedinfavorofthenew-to-RubyJSON......
How can I find which operating system my Ruby prog
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: IwantmyRubyprogramtododifferentthingsonaMacthanonWindows.HowcanIfindoutonwhichsystemmyprogramisrunning? 回答1: ......
Rails model without database
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: IwanttocreateaRails(2.1and2.2)modelwithActiveRecordvalidations,butwithoutadatabasetable.Whatisthemostwidelyusedappro......
How do I create multiple submit buttons for the sa
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: Ineedtohavemultiplesubmitbuttons. IhaveaformwhichcreatesaninstanceofContact_Call. Onebuttoncreatesitasnormal. Theothe......
Rails 3: Get Random Record
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: So,I'vefoundseveralexamplesforfindingarandomrecordinRails2--thepreferredmethodseemstobe: Thing.find:first,:offset=>ra......
p vs puts 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: IsthereanydifferencebetweenpandputsinRuby? 回答1: pfooprintsfoo.inspectfollowedbyanewline,i.e.itprintsthevalueofin......
The 'json' native gem requires installed b
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: Ihaveruby1.9.2p180(2011-02-18)[i386-mingw32]installedonmywindows7machine.NowItriedtoinstalltheJSONgemusingthecommand,"......
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