Ruby: How to find and return a duplicate value 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: arrisarrayofstrings,e.g.:["hello","world","stack","overflow","hello","again"]. Whatw...
Error while installing json gem 'mkmf.rb can&#
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: Forcontext,itonaremoteserverwhichhasafirewall.I'msettingupmyenvironmentthroughaproxy.Ihaveruby1.8.7.WhenItrytogem......
What's the difference between Ruby's dup a
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: TheRubydocsfordupsay: Ingeneral,cloneanddupmayhavedifferentsemanticsindescendentclasses.Whilecloneisusedtoduplicate......
Rails 4: List of available datatypes
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: WherecanIfindalistofdatatypesthatcanbeusedinRubyonRails4? Suchas text string integer float date Ikeeplearning......
Confusion with the assignment operation inside a f
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: Idon'tunderstandrubylocalscope ......
How can I track system-specific config files in a
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: Ihavearubyproject,andthedatabasehostandportmightbedifferentondevandproduction.Ineedawaytogetdifferentvaluesforthos......
Regex to match Date
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: Iwanttomatchdateswithformatmm/dd/yyormm/dd/yyyybutitshouldnotpick23/09/2010wheremonthis23whichisinvalidnorsomeinvali......
Combining implicit wait and explicit wait together
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: Mytwoscenarios- 1)First @driver.manage.timeouts.implicit_wait=30 @wait=Selenium::WebDriver::Wait.new(:timeout=>45)#Timegreate......
Unable to install gem - Failed to build gem native
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: Ruby1.9.3 ThepartofGemfile #............... gem"pony" gem"bcrypt-ruby",:require=>"bcrypt" gem"nokogiri&qu...
What does the “===” operator do in Ruby? [duplicat
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: ===vs.==inRuby I'veseenitusedafewtimeslatelybutcan'tfigureoutwhatitdoes.Cananyoneillustra......
Get the name of the currently executing method
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: $0isthevariableforthetoplevelRubyprogram,butisthereoneforthecurrentmethod? 回答1: Evenbetterthanmyfirstansweryouc......
Look up all descendants of a class in Ruby
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: IcaneasilyascendtheclasshierarchyinRuby: String.ancestors#[String,Enumerable,Comparable,Object,Kernel] Enumerable.ancestor......
What is the colon operator in Ruby?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: WhenIsay{:bla=>1,:bloop=>2},whatexactlydoesthe:do?Ireadsomewhereabouthowit'ssimilartoastring,butsomehowasymbol.......
How can I avoid running ActiveRecord callbacks?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: Ihavesomemodelsthathaveafter_savecallbacks.Usuallythat'sfine,butinsomesituations,likewhencreatingdevelopmentdata,Iwantt......
Why use symbols as hash keys in Ruby?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: AlotoftimespeopleusesymbolsaskeysinaRubyhash. What'stheadvantageoverusingastring? E.g.: hash[:name] vs. hash['name'] ......
How to run Rake tasks from within Rake tasks?
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):问题: IhaveaRakefilethatcompilestheprojectintwoways,accordingtotheglobalvariable$build_type,whichcanbe:debugor:release(ther......
How do I download a binary file over HTTP?
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: HowdoIdownloadandsaveabinaryfileoverHTTPusingRuby? TheURLishttp://somedomain.net/flv/sample/sample.flv. IamontheWindows......
'sudo gem install' or 'gem install'
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: Running'sudogemlist--local'and'gemlist--local'givemedifferingresults.Mygempathissettomyhomefolderandonlycontainsthe......
Difference between \\A \\z and ^ $ in Ruby regular
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: InthedocumentationIread: Use\Aand\ztomatchthestartandendofthestring,^and$matchthestart/endofaline. Iamgoing......
ruby 1.9: invalid byte sequence in UTF-8
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'mwritingacrawlerinRuby(1.9)thatconsumeslotsofHTMLfromalotofrandomsites. Whentryingtoextractlinks,Idecidedtojustus......
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com//static/images/defaulticon.jpg', '《Ruby》','https://www.manongdao.com/cat-50.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}