From: Paul Roche <prpaulroche@...>
Date: 2010-10-06T03:59:39+09:00
Subject: Calling a method with an instance

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
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