From: Justin Collins <justincollins@...>
Date: 2009-12-08T19:11:12+09:00
Subject: Re: indent strings(make them lined up)

Jon Kim wrote:
> Hi,
>
> I am newbie in Ruby. I have a question about indenting string.
>
> there is strings like below:
>
> www.google.com => 123.123.123.12
> www.ibm.com => 123.112.123.12
> www.iowahawkeyes => 123.123.112.12
>
> i want to make above like next
>
> www.google.com     => 123.123.123.12
> www.ibm.com        => 123.112.123.12
> www.iowahawkeyes   => 123.123.112.12
>
>
> original code was
>
> puts (dns + " => " + ip)
>
> I tried next code
>
> puts (dns + "  "*(20 - dns.length) + " = > " + ip)
>
> but it did not work well. please teach me how to do it.
>   

You could do

puts "#{dns.ljust(20)} => #{ip}"


-Justin