ruby – 比较相等的字符串在Hash中找不到相同的对象
发布时间:2020-12-16 21:54:24 所属栏目:百科 来源:网络整理
导读:我有两个字符串看起来相等: context = "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ"slice_str = context.slice(105,24) # = "http://cnnmon.ie/1kcFZSQ"str =
我有两个字符串看起来相等:
context = "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ" slice_str = context.slice(105,24) # => "http://cnnmon.ie/1kcFZSQ" str = "http://cnnmon.ie/1kcFZSQ" slice_str == str # => true slice_str.eql? str # => true 但是当我在一个哈希中查找值时,键是字符串,它们在Ruby 2.1.0和Ruby 2.1.1中不会返回相同的东西: redirects = {"http://cnnmon.ie/1kcFZSQ"=>""} redirects.key?(slice_str) # => false redirects.key?(str) # => true 这个行为有什么解释? Ruby 1.9.3按预期工作. 解决方法
这是一个ruby的错误2.1.3
$rvm use 2.1.2 Using /Users/richniles/.rvm/gems/ruby-2.1.2 $irb 2.1.2 :001 > context = "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ" => "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ" 2.1.2 :002 > slice_str = context.slice(105,24) # => "http://cnnmon.ie/1kcFZSQ" => "http://cnnmon.ie/1kcFZSQ" 2.1.2 :003 > str = "http://cnnmon.ie/1kcFZSQ" => "http://cnnmon.ie/1kcFZSQ" 2.1.2 :004 > redirects = {"http://cnnmon.ie/1kcFZSQ"=>""} => {"http://cnnmon.ie/1kcFZSQ"=>""} 2.1.2 :005 > redirects.key?(slice_str) => false 2.1.2 :006 > redirects.key?(str) => true 但是在ruby 2.1.3中也是一样: $rvm use 2.1.3 Using /Users/richniles/.rvm/gems/ruby-2.1.3 $irb 2.1.3 :001 > context = "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ" => "Marriott International World’s Most ADMIRED Lodging Company by FORTUNE for 14th yr. via @FortuneMagazine http://cnnmon.ie/1kcFZSQ" 2.1.3 :002 > slice_str = context.slice(105,24) # => "http://cnnmon.ie/1kcFZSQ" => "http://cnnmon.ie/1kcFZSQ" 2.1.3 :003 > str = "http://cnnmon.ie/1kcFZSQ" => "http://cnnmon.ie/1kcFZSQ" 2.1.3 :004 > redirects = {"http://cnnmon.ie/1kcFZSQ"=>""} => {"http://cnnmon.ie/1kcFZSQ"=>""} 2.1.3 :005 > redirects.key?(slice_str) => true 2.1.3 :006 > redirects.key?(str) => true (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |