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......
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......
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......
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......
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......
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......
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...
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......
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"=>......
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(&......
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......
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......
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......
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| ......
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......
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......
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......
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......
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...
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......