From: Andrew Wagner <wagner.andrew@...>
Date: 2010-10-06T04:34:34+09:00
Subject: Re: Calling a method with an instance

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Um, I think you guys mean
Discount.discount_amount(dis1.amount,dis1.discount)

discount_amount is not an instance method. Or am I missing something?

On Tue, Oct 5, 2010 at 3:25 PM, Jedrin <jrubiando@gmail.com> wrote:

> 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)
>
>

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