From: Ara.T.Howard@...
Date: 2005-05-04T21:14:48+09:00
Subject: Re: [ANN] traits-0.0.0

On Wed, 4 May 2005, Zach Dennis wrote:

> I like where Ara is going and I like where Naseby went. I think both of
> these solutions go hand in hand. Included is an example/test usage (yes it
> runs) of how it appeals to me.
>
> Basically they should both be 'traits'. Please see example rb file for more
> information.

i actually had the whole thing wrapped in a Traits module...  i'm ok with this
approach if people don't mind doing an include.  one other positive thing is
that this does not pollute Module and Class with new methods...

i'll bang out a

   module Trait
     module AccessorTraits
     end
   end

now and read more about MethodTraits before tackling - this was a nice
diversion while i've been on leave but 'real' work starts back up today so i
won't have time for a while...

cheers.

>
> --------------080906010603050401010206
> Content-Type: text/plain;
> name="traits.rb"
> Content-Transfer-Encoding: 7bit
> Content-Disposition: inline;
> filename="traits.rb"
>
>
>
> module Trait
> 	##
> 	# use append_features so if the user includes Trait it will get everything
> 	# from with AccessorTrait and MethodTrait also. see
> 	def self.append_features( aModule )
> 		constants.each { |c| aModule.instance_eval( "include #{c}" ) }
> 	end
>
> 	module AccessorTraits
> 		# include Ara's code here
> 		def trait( arg )
> 			puts "#{self} has trait #{arg}"
> 		end
> 	end
>
> 	module MethodTraits
> 		# include here the functionality from
> 		# http://homepages.ihug.com.au/~naseby/33.html
> 		def require_method( arg )
> 			puts "#{self} has required method #{arg}"
> 		end
> 	end
> end
>
>
> ## Example Usage
>
> class A
> 	# includes Trait, so it gets all of Traits functionality
> 	include Trait
> end
> A.new.trait( :a )
> A.new.require_method( :reqA )
> puts
>
> class B
> 	# includes AccessorTraits, only gets AccessorTraits functionality
> 	include Trait::AccessorTraits
> end
> begin
> 	B.new.trait( :b )
> 	B.new.require_method( :reqB )
> rescue => ex
> 	puts ex
> end
> puts
>
> class C
> 	# includes MethodTraits, only gets MethodTraits functionality
> 	include Trait::MethodTraits
> end
> begin
> 	C.new.trait( :b )
> rescue => ex
> 	puts ex
> 	C.new.require_method( :reqC )
> end
> puts
>
>
>
>
> --------------080906010603050401010206--
>
>
>

-a
-- 
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| phone :: 303.497.6469
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| that they pass away. --aitken roshi
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