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收录了14053篇文章 ·14922个问题 · 0人关注
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I'm using rbenv, so why are there two Gem path

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: Toclarify,I'musingrbenvtomanagemyrubyversions.Iwasundertheimpressionthatbinariesaremanagedasshimsin......

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Ruby: What's the proper syntax for a boolean 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: Whatisthepropersyntaxforamethodthatchecksastringforapattern,andreturnstrueorfalseiftheregexmatches......

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Access Slack files from a slack bot

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: Ineedaslackbotthat'sabletoreceiveandsavefilessendfromslackchatrooms. Theproblemis:slackdoesn'tsendf......

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How do I execute Rake tasks with arguments multipl

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'snotpossibletoinvokethesameraketaskfromwithinaloopmorethanonce.But,Iwanttobeabletocallrakefir......

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uninitialized constant ApplicationRecord

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: IamworkingontherailstutorialbookonlineandIamgettingthefollowingerrormessagewhenIgotohttp://localhost......

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Overcoming a basic problem with CSV parsing using

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: IhavefoundaCSVparsingissuewithFasterCSV(1.5.0)whichseemslikeagenuinebug,butwhichI'mhopingthere'sawo......

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Better way to sum values in an array of hashes [cl

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: Closed.Thisquestio...

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Why does Array#each return an array with the same

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'mlearningthedetailsofhoweachworksinruby,andItriedoutthefollowinglineofcode: p[1,2,3,4,5].each{|el......

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Ruby group hashes by value of key

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: Ihaveanarray,whichisoutputbyamap/reducemethodperformedbyMongoDB,itlookssomethinglikethis: [{"minute"=>......

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Using Ruby, how do I convert all array values to 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: Ineedtoconvertfixnumstostrings.Mysolutionis: arr.map{|a|a.to_s} Isthereabetterway? 回答1: arr.map(&......

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returning struct data as a hash 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: Isthereavalidreasonfortherenotbeingamethodtoreturnthedataofastandardrubystructasahash(member,valu......

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Difference between __callee__ and __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: InRuby,onecanuseeither __callee__ or __method__ tofindthenameofthecurrentlyexecutingmethod. What......

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What to do after removing a gem from the Gemfile?

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: Iremovedagem'mygem'fromtheGemfile,butjustnowIrealizedit'sstillinstalled. SohowdoItellbundlertoresc......

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Ruby best practice : if not empty each do else 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: 1.Ican'tfindanelegantwaytowritethiscode: ifarray.empty? #processemptyarray else array.eachdo|el| ......

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Kaminari & Rails pagination - undefined method `cu

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: Isearchedandsearched,butnothingsolvedmyproblem.Here'smycontroller: defshow @topic=Topic.find(params[:i......

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How to add attribute to Nokogiri node?

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'mtryingtoaddanattributetoanexistingNokogirinode.WhatI'vedoneisthis: node.attributes['foobar']=Nokogir......

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How do I skip loading of Rails initializers when 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: Myrailsapphasawebsitecrawlerthatloadstheauthenticationcredentialsthatthecrawlerusesinarailsinitializer......

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Calling base class method from overloaded method 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: PerhapsIamjustnotusingthecorrectterminologyforRuby(andifIampleasecorrectme),butGooglejustisn'thelpi......

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Best Ruby language guide/tutorial for Rails? [clos

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: Closed.Thisquestio...

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Sorting an array of strings 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: IhavelearnedtwoarraysortingmethodsinRuby: array=["one","two","three"] array.sort.reverse! or: array=["o......