From: Mauricio Fernandez <mfp@...>
Date: 2006-06-06T05:11:45+09:00
Subject: Re: An alternative to the class Foo < Struct.new(vars) idiom and SuperStruct

On Fri, Jun 02, 2006 at 02:35:26AM +0900, ara.t.howard@noaa.gov wrote:
> >Would  def sum; @a + @b end   also work?
> >Plain instance variables are the main appeal of SuperStruct or SuperClass.
> 
> yes.
>
> >Interesting.  Can this be made to work if X is defined as
> > class X
> >   attr_reader :foo
> >   def initialize(foo); @foo = foo end
> > end
> >and doesn't include TraitInit, or when it does something non-trivial in
> >#initialize?  In other words, is it possible to have a single class in the
> >hierarchy use traits' trait_initialize without touching the rest?
> 
> yes. 
[...]
> 
> >And is the block evaluated every time one calls #foo, or only once?
> 
> only once.  
[...]

Thanks for taking the time to answer my questions; it seems traits is very
well-behaved indeed :)

-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby