From: botp <botpena@...>
Date: 2009-04-16T12:57:35+09:00
Subject: Re: Instance_eval and constants lookup rules in ruby 1.9

On Thu, Apr 16, 2009 at 12:13 AM, Daniel Mendler
<dmendler@wurzelteiler.de> wrote:

i should expect that behaviour if using *instance*_eval inside *modules*.

i have many options though (note test2.rb does not use instance_eval)...


botp@jedi-hopeful:~$ cat test?.rb

#--test1.rb------------
class X
 def run(&block)
   instance_eval(&block)
 end
end
module A
 I_AM_FOUND = 666
 a = X.new
 a.run {
   puts A::I_AM_FOUND
 }
end



#-- test2.rb ---------
class X
 def run(&block)
   block.call
 end
end
module A
 I_AM_FOUND = 666
 a = X.new
 a.run {
   puts I_AM_FOUND
 }
end



#-- test3.rb -----------
class X
  I_AM_FOUND = 666
  def run(&block)
    instance_eval(&block)
  end
end
module A
 a = X.new
 a.run {
   puts I_AM_FOUND
 }
end



#-- test4.rb -----------
class X
 def run(&block)
   instance_eval(&block)
 end
end
I_AM_FOUND = 666
a = X.new
a.run {
  puts I_AM_FOUND
}

botp@jedi-hopeful:~$


kind regards -botp