From: Ricardo Amorim <mksm.sama@...>
Date: 2009-08-04T13:23:58+09:00
Subject: Inexistent instance variable value

Howdy,

I have noticed this a while ago and someone asked in IRC, and I have
no clue on WHY this happens:

irb(main):001:0> local_var
NameError: undefined local variable or method `local_var' for main:Object
        from (irb):1
irb(main):002:0> @local_var
=> nil

Why are instance_variables always available as nil when not defined?

Regards,

Ricardo Amorim
mapaBRASIL.net