From: Li Chen <chen_li3@...>
Date: 2006-12-18T00:16:55+09:00
Subject: Why the resutls are different

Hi all,

I try to understand the concept of variable scopes. I define two classes
with very similar structures. But Ruby complains class Y only. Any
comments?

Thanks,

Li


class X
  def initialize(name,artist,duration)
    @name=name
    @artist=artist
    @duration=duration
  end
  puts "This is the name"" #{name}"
end

test_x=X.new(1,2,3)
puts test_x.inspect

>ruby variables1.rb
This is the name X
#<X:0x28ae894 @artist=2, @name=1, @duration=3>
>Exit code: 0


class Y
  def initialize(arg1,arg2,arg3)
    @arg1=arg1
    @arg2=arg2
    @arg3=arg3
  end
   puts "This is arg1"" #{arg1}"
end

    test_y=Y.new(1,2,3)
    puts test_y.inspect

>ruby variables2.rb
variables2.rb:15: undefined local variable or method `arg1' for Y:Class
(NameError)
>Exit code: 1

-- 
Posted via http://www.ruby-forum.com/.