From: Jedrin <jrubiando@...>
Date: 2010-10-06T04:25:12+09:00
Subject: Re: Calling a method with an instance

On Oct 5, 3:20 pm, Jedrin <jrubia...@gmail.com> wrote:
> On Oct 5, 2:59 pm, Paul Roche <prpaulro...@gmail.com> wrote:
>
>
>
> > Hi. I'm playing around with creating methods and then creating an
> > instance that calls the instance. Here's my code.....
>
> > class Discount
> > attr_accessor :amount, :discount
>
> >  def initialize(am, dis)
> > @amount = am
> > @discount = dis
>
> > end
>
> > def self.discount_amount(amt, disc)
> > newamount = amt - disc
> > end
>
> > end
>
> > dis1 = Discount.new(100, 20)
>
> > dis1.discount_amount(amount, discount)
>
> > The error I get is......
>
> > discount.rb:25:in `<main>': undefined local variable or method `amount'
> > for main
> > :Object (NameError)
>
> > What is the best way to call a method with an instance?
> > Thanks
> > --
> > Posted viahttp://www.ruby-forum.com/.
>
> I think u want:
> dis1.discount_amount(dis1.amount, discount)

this works, but not sure if this approach is most sensible

dis1.discount_amount(dis1.amount, dis1.discount)