From: botp <botpena@...>
Date: 2012-07-15T19:27:54+09:00
Subject: Re: What is done by Ruby

On Sat, Jul 14, 2012 at 11:14 PM, jacbs loaru <lists@ruby-forum.com> wrote:

>> i have a list of domains and i want to apply acl such as ".example.com" will
>> match all domains that starts with "example.com".
>> but the problem is that domain start in a reverse order.
>> i was thinking on what is the best\better way to match a domain to domain
>> list ?

just reverse them before comparing or you can use regex to compare
relative to end of string.. eg

> s=%w(one.example.com two.testing.com three.four.example.com)
=> ["one.example.com", "two.testing.com", "three.four.example.com"]

>s.each do |x|
   p [x,x.reverse.start_with?(d.reverse),x=~/#{d}$/]
end

["one.example.com", true, 4]
["two.testing.com", false, nil]
["three.four.example.com", true, 11]

kind regards -botp