From: Logan Capaldo <logancapaldo@...>
Date: 2006-07-21T11:59:05+09:00
Subject: Re: Problem when 'loading' a file containing a class derived from a struct


On Jul 20, 2006, at 5:27 PM, Chris Roos wrote:

> I actually spotted this in a rails app but traced it back to ruby.  Is
> this a real problem/bug or am I missing something obvious?
>
> $ cat > person.rb
> class Person < Struct.new(:forename, :surname)
> end
> $ irb
> irb> load 'person.rb'
> => true
> irb> load 'person.rb'
> TypeError: superclass mismatch for class Person
>        from ./person.rb:1
>        from (irb):2
>
> This behaviour has been experienced with both ruby 1.8.2 and 1.8.4.
>
> Chris
>

Hence to use this with rails which will reload stuff like it's going  
out of style:

Person = Struct.new(:forename, :surname)

class Person
   # optionally add methods here
end