From: Christopher Carver <ccarver0@...>
Date: 2009-06-16T01:43:31+09:00
Subject: Re: confusion about object method scoping

I just realized I made a couple of typos.  I forgot to pass an
argument to Calculator.factorial and in factorial I used the =
operator instead of +=.  But I think you see what I am trying to do.
How can I make a class method callable by another method in that
class?

On Mon, Jun 15, 2009 at 12:31 PM, Christopher Carver<ccarver0@gmail.com> wrote:
> 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()
>