From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2012-09-27T01:26:25+09:00
Subject: Re: Subclassing Date

On Wed, Sep 26, 2012 at 6:02 PM, Damián M. González
<lists@ruby-forum.com> wrote:
> Ey guys, can't understand what's happening here:
>
>  require 'date'
>
>  class Dia < Date
>   def initialize(ano, mes, dia, obj_mes)
>    @mes = obj_mes
>    super(ano, mes, dia)
>   end
>  end
>
>  a = Dia.new
>  => #<Dia: -4712-01-01 ((0j,0s,0n),+0s,2299161j)>
>  #Was expecting an error, no arguments has been passed

1.9.2p290 :001 > require 'date'
 => true
1.9.2p290 :002 >
1.9.2p290 :003 >    class Dia < Date
1.9.2p290 :004?>     def initialize(ano, mes, dia, obj_mes)
1.9.2p290 :005?>        @mes = obj_mes
1.9.2p290 :006?>        super(ano, mes, dia)
1.9.2p290 :007?>       end
1.9.2p290 :008?>    end
 => nil
1.9.2p290 :009 > Dia.new
ArgumentError: wrong number of arguments (3 for 4)
	from (irb):4:in `initialize'
	from /home/jesus/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/date.rb:811:in
`new'
	from /home/jesus/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/date.rb:811:in
`civil'
	from (irb):9
	from /home/jesus/.rvm/rubies/ruby-1.9.2-p290/bin/irb:16:in `<main>'

What version of Ruby are you using?

Jesus.