From: timr <timrandg@...>
Date: 2009-11-20T14:05:08+09:00
Subject: eval behaves differently inside a method definition...

#lets give strings the ability to evaluate theirselves as if in irb.
>> class String
>> def irb
>> eval self
>> end
>> end
=> nil
>> "puts 'look at me'"
=> "puts 'look at me'"
>> "puts 'look at me'".irb
look at me
=> nil

#good looks like strings can interpret theirselves. But how about this
case?

>> "class Pumpkin;def pie;puts 'yum';end;end".irb
=> nil
>> Pumpkin.new
NameError: uninitialized constant Pumpkin
	from (irb):287
	from /usr/local/bin/irb:12:in `<main>'

#not flying. Is it a problem with the string? Try with eval of the
same string:

>> eval "class Pumpkin;def pie;puts 'yum';end;end"
=> nil
>> Pumpkin.new
=> #<Pumpkin:0x109896c>

No problem evaluating the class definition in a string. So eval
behaves differently inside a method definition.

Could anyone please explain that?
Thanks in advance,
Tim