From: "W. James" <w_a_x_man@...>
Date: 2009-12-09T17:55:11+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.

data =
  %w(blip bleeping rob_the_fraud tor what-pompous-verbosity dreadful).
  map{|s| [s + '.com', (1..4).map{rand 256}.join('.')] }

width = data.map{|a,b| a.size}.max

puts data.map{|a,b| [a.ljust(width),b].join " => " }


=== output ===

blip.com                   => 249.7.84.219
bleeping.com               => 14.120.94.124
rob_the_fraud.com          => 252.63.171.160
tor.com                    => 173.239.40.90
what-pompous-verbosity.com => 56.61.184.48
dreadful.com               => 31.56.145.209


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