From: "Kent S." <ksibilev@...>
Date: 2004-05-21T01:19:06+09:00
Subject: Re: Include into class after instance is created

How about this:

$ irb
irb(main):001:0> module M1
irb(main):002:1> Const = 1
irb(main):003:1> end
=> 1
irb(main):004:0> module M2
irb(main):005:1> Const = 2
irb(main):006:1> end
=> 2
irb(main):007:0> class A
irb(main):008:1> def initialize(mod)
irb(main):009:2> self.class.class_eval{ include mod }
irb(main):010:2> end
irb(main):011:1>
irb(main):012:1*
irb(main):013:1* def const
irb(main):014:2> puts Const
irb(main):015:2> end
irb(main):016:1> end
=> nil
irb(main):017:0> A.new(M1).const
1
=> nil
irb(main):018:0> A.new(M2).const
2
=> nil
irb(main):019:0>


Cheers,
Kent.
On May 20, 2004, at 10:33 AM, Brian Schroeder wrote:

>
> On Thu, 20 May 2004 23:05:10 +0900, Kent S. wrote:
>
>> Use Object#extend instead of include.
>
> Thanks for the tip.
>
> I need the constants defined in the module to be included in my class,  
> it
> seems that extend only includes the instance methods.
>
> $ ri extend
> ----------------------------------------------------------  
> Object#extend
>      obj.extend(module, ...)    => obj
> ----------------------------------------------------------------------- 
> -
>      Adds to _obj_ the instance methods from each module given as a
>      parameter.
>
> Any thoughts about this?
>
> Regards,
>
> Brian
>
> -- 
> Brian Schr�der
> http://www.brian-schroeder.de/
>