From: Christopher Carver <ccarver0@...>
Date: 2009-06-16T01:31:11+09:00
Subject: confusion about object method scoping

Hello,

I am defining a class.  That class has several methods.  In one of the
class methods I'm trying to use a previously defined method.  It's
throwing an exception.  Here's some code that demonstrates my problem.
 Am I really unable to have a class use some of it's own methods if
they've already been defined?  Thanks in advance!

class Calculator

 private
 def add(x,y)
   x+y
 end

 public
 def Calculator.factorial(x)
   result = 0

   (1..x).each { |number|
     result = add(result,number)
   }

   result
 end

end

puts Calculator.factorial()