From: Erik Meade <emeade@...>
Date: 2001-11-04T06:48:15+09:00
Subject: [ruby-talk:24294] Re: Newbie wrong # of arguments(4 for 0) question

Armin,

Thanks, that does fix my error, but I was sort of under the impression
that attr_reader did that for you in the pick axe book I see:

class Song 
  attr_reader :name, :artist, :duration 
end 
aSong = Song.new("Bicylops", "Fleck", 260) 

but entering this into irb shows me it is incorrect.  Thanks for
solution!

Erik

> -----Original Message-----
> From: Armin Roehrl [mailto:armin@approximity.com]
> Sent: Saturday, November 03, 2001 3:35 PM
> To: ruby-talk ML
> Subject: [ruby-talk:24292] Re: Newbie wrong # of arguments(4 for 0)
> question
> 
> 
> Hi,
> 
> 	what about adding  initialize to Revision?
> --
> class Revision
>   attr_reader :revision, :date, :name, :log
>   def initialize(revision,date,name,log)
>     @revision,@date,@name,@log=revision,date,name,log 
>   end
> end
> ---
> 
> Bye,
> 	Armin
> 
> On Saturday 03 November 2001 22:17, you wrote:
> > Well I've finally found an excuse to write some ruby, and I 
> haven't made it
> > far before
> > I've gotten myself stuck.  I remember a joke about the 
> arguments error from
> > Ruby Conf,
> > but can't remember the punch line :(
> >
> > I'm sure I am making some simple little mistake, but I have no 
> pair so I am
> > at a loss.
> > If anyone can offer assistance I would be most appreciative.
> >
> > --
> > Erik Meade             emeade@objectmentor.com
> > Senior Consultant      Object Mentor, Inc.
> > http://www.junit.org
> >
> >
> >
> >
> > Here is my test:
> > =========================
> > require 'revision'
> > require 'runit/testcase'
> > require 'runit/assert'
> > require 'runit/cui/testrunner'
> >
> > class TestRevision < RUNIT::TestCase
> >
> >   def setup
> >     super
> >   end
> >
> >   def test_equals
> >     aRevision = Revision.new("1.4", "2001/10/21 02:30:18", "kbeck",
> > "Enhanced TextRunnerTest to catch missing return values.")
> >     bRevision = Revision.new("1.4", "2001/10/21 02:30:18", "kbeck",
> > "Enhanced TextRunnerTest to catch missing return values.")
> >     assert_equals(aRevision, bRevision)
> >   end
> > end
> >
> > RUNIT::CUI::TestRunner.run(TestRevision.suite)
> > ==========================
> >
> > And the file I'm testing:
> >
> > ==========================
> > class Revision
> >   attr_reader :revision, :date, :name, :log
> > end
> > ==========================
> >
> > And of course, the error:
> >
> > ==========================
> > $ ruby test_revision.rb
> >
> > TestRevision#test_equals E.
> > Time: 0.0
> > FAILURES!!!
> > Test Results:
> >  Run: 1/1(0 asserts) Failures: 0 Errors: 1
> > Errors: 1
> > test_revision.rb:13:in `initialize'(TestRevision): wrong # of 
> arguments(4
> > for 0)
> >  (ArgumentError)
> >         from test_revision.rb:13:in `new'
> >         from test_revision.rb:13:in `test_equals'
> >         from test_revision.rb:19
> > ==========================
> 
> -- 
> Armin.
> 
> -----------------------------------------------
> Armin Roehrl, http://www.approximity.com
> "The best way to predict the future is to invent it."
>                                           --Alan Kay