如何通过与常规的前pressions数组搜索？ [英] How to search through array with regular expressions?

问题描述

你好，这是我所要完成的任务更大规模的一个小例子。我需要通过电子邮件的数组来搜索并匹配电子邮件域的另一个数组。所以，如果他们存在打印出来的电子邮件地址。不过，我不能想出一个办法做到这一点。这是我走到这一步，但它是没有好处的。

 电子邮件=[e-mail]，[e-mail]，[e-mail]
域=@ test.com，@ google.comemail.each做|电子邮件|
   如果电子邮件== /.*#{domain}/
      把电子邮件
   结束
结束
 

解决方案

您应该使用的 的grep ：

 电子邮件=[e-mail]，[e-mail]，[e-mail]
域=@ test.com，@ google.com
章= Regexp.union（域）
email.grep（/（＃{}章）$ /）做|比赛|
    把比赛
结束＃＆GT;＆GT; [e-mail]
＃＆GT;＆GT; [e-mail]
 

Hi this is a small example of what I want to accomplish on a larger scale. I need to search through an array of emails and match them to another array of email domains. So if they exists print out the email addresses. However I cannot figure out a way to do this. This is what I got so far, but it is no good.

email = "[e-mail]", "[e-mail]", "[e-mail]"
domain = "@test.com", "@google.com"

email.each do |email|
   if email == /.*#{domain}/ 
      puts email
   end
end

解决方案

You should use grep :

email = "[e-mail]", "[e-mail]", "[e-mail]"
domain = "@test.com", "@google.com"
reg = Regexp.union(domain)
email.grep(/(#{reg})$/) do |match|
    puts match
end

# >> [e-mail]
# >> [e-mail]

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