Hi,

ts wrote:
>  Sorry, there is something that I've not understood in bootstraptest/test_eval.rb  

>  why I can't use instance_{eval,exec} to define method with nil ?

$ ruby -ve '
   begin
     nil.instance_eval {
       def a() :a end
     }
   rescue TypeError
     p :ok
   end'
ruby 1.8.5 (2006-08-25) [i486-linux]
:ok

There is no eigenclass of nil.

-- 
// SASADA Koichi at atdot dot net