From: Lloyd Linklater <lloyd@2live4.com>
Date: 2007-06-13T04:59:38+09:00
Subject: Re: Getting the last N bytes of a string:

> p 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.r_slice(0..9)

What about this:

def last_bytes(s, number_of_bytes)
  if s.size > number_of_bytes then
    return s.slice(s.size - number_of_bytes..s.size)
  end
  return s
end

p last_bytes('ABCDEFGHIJKLMNOPQRSTUVWXYZ', 10)
p last_bytes('WXYZ', 10)

this is the result:

"QRSTUVWXYZ"
"WXYZ"

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