From: Xavier Noria <fxn@...>
Date: 2007-11-17T14:20:51+09:00
Subject: Re: "instance_eval" (eg, sent to a class object)

On Nov 16, 2007, at 11:00 PM, Rick DeNatale wrote:

> It only affects the execution context by binding self to the instance,
> NOT the lexical context.

This is related to another thread about constant name resolution  
(subject "constant name resolution and module_eval").

Why then *_eval (BLOCK|STRING) behave different?

   C = "Object"

   class String
     C = "String"
   end

   a = ''
   a.instance_eval do
     def c_in_block; C; end
   end

   a.instance_eval <<EOS
     def c_in_string; C; end
   EOS

   puts a.c_in_block  # -> Object
   puts a.c_in_string # -> String

Looks like there's a "current" module for constant name resolution,  
and another "current" module for method definition etc.

-- fxn