From: Bertram Scharpf <lists@...>
Date: 2006-01-21T05:11:16+09:00
Subject: Still $SAFE

Hi,

as many of you probably noticed, I didn't get an answer to
my question on Ruby-Talk:

  <http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/176135>

Just let me ask it in a simpler way:


irb(main):001:0> instance_eval { $SAFE = 4 } ; $SAFE
=> 4
irb(main):002:0> instance_eval " $SAFE = 4 " ; $SAFE
=> 0


What is the fundamental difference? And why?

In `eval.c', I find a macro `PUSH_FRAME'. What are all the
ways I can induce Ruby to enter a subframe?

Thanks in advance.

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de