From: Florian Gilcher <flo@...>
Date: 2009-06-17T07:01:24+09:00
Subject: [ruby-core:23880] Re: instance_eval no longer yielding self in ruby  1.9


On Jun 16, 2009, at 10:47 PM, apeiros wrote:
>
> So I define the method conditionally like:
>  if method_defined? :instance_exec then
>    def ...; instance_exec(self, &block); ...; end
>  else
>    def ...; instance_eval(&block); ...; end
>  end
>
> ?
>
> I don't know, but I find that solution somewhat ugly. The  
> alternative is to have no 1.8 compatibility which is right now not  
> too nice.
>
> Regards
> Stefan Rusterholz
>

There are instance_exec-Implementations in 1.8.x, for example the one  
from facets:

http://facets.rubyforge.org/doc/api/core/classes/Object.html#M000242

So usually, I do something like this:

   unless Object.respond_to? :instance_exec
     require 'instance_exec'
   end

Regards,
Florian



--
Florian Gilcher

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