From: Claus Guttesen <kometen@...>
Date: 2007-01-07T09:21:54+09:00
Subject: get remaing characters in a string

Hi.

I need to get the last three characters in a string. I couldn't find a
function in the String class so I came up with this:

class Remainder

 attr_writer :n

 def initialize(t = "", n = 0)
   @t = t.to_s
   @n = n.to_i
 end

 def get
   get_remaining_letters
 end

 private
 def get_remaining_letters
   s = @t.size
   if s < @n
     r = 0
   else
     r = s - @n
   end

   ft = @t.slice(r, @n)
 end

end


t = Remainder.new("Guttesen", 5)
puts t.get
tesen
t.n = 4
puts t.get
esen

Did I reinvent the wheel or does it make sense to add it to String?

regards
Claus