From: Farrel Lifson <farrel.lifson@...>
Date: 2006-11-30T02:02:57+09:00
Subject: Re: Wrong results using named arguments

On 29/11/06, Jason  Vogel <jasonvogel@gmail.com> wrote:
> Source:
>
> [a.rb]
> class A
>
>         attr_accessor :id
>         attr_accessor :name
>
>         def initialize(id = nil, name = nil)
>                 @id = id
>                 @name = name
>         end
> end
>
> [test.rb]
> require 'a'
>
> a1 = A.new(:name => "test")
> a2 = A.new(:name => "test2")
>
> p a1
> p a2
>
> Results:
> #<A:0x28c2d80 @id={:name=>"test"}, @name=nil>
> #<A:0x28c2678 @id={:name=>"test2"}, @name=nil>
>
> I expected:
>
> #<A:0x28c2d80 @id=nil, @name="test">
> #<A:0x28c2678 @id=nil, @name="test2">
>
> So what nuby mistake am I making?
>
> Thanks,
> Jason
>
>
>

Ruby really doesn't have named arguments, rather it uses a hash to fake it.

Your initialize method for A should probably be written
     def initialize(args)
               @id = args[:id]
               @name = args[:name]
       end

Farrel