From: Adam Prescott <mentionuse@...>
Date: 2010-09-22T05:55:27+09:00
Subject: Re: comparing the first half of a string to the second half

I think a regular expression is probably the most succinct, cleanest
approach for this:

s = "Cyano The Cat" * 2
if s =~ /^(.+)\1$/
  puts $1
end

On Tue, Sep 21, 2010 at 9:41 PM, joe chesak <rubytalk@chesak.com> wrote:
> I want to be able to test a string, to see if the second half of the string
> is a duplicate of the first part of the string, and if so I just want the
> first half (or the second for that matter).  I am using  ruby-1.9.2.
>
> I can accomplish this with the following:
>
> str = 'Cyano The CatCyano The Cat'
>
> str = str[0..str.size/2-1] if str[0..str.size/2-1] == str[str.size/2..-1]
>  => "Cyano The Cat"
>
> Is there a better way?
>
> Joe
>