From: Michael Linfield <globyy3000@...>
Date: 2008-05-13T04:48:21+09:00
Subject: Re: Constants, Bindings and instance_eval

Achim Passen wrote:
> Dear rubyists,
> 
> i'm fairly new to ruby, so please apologize if i'm missing something
> obvious. I'm trying to figure out how constant lookup works and find
> myself confused. Here we go:
> 
>     class A; C=3 end
> 
>     $a = A.new
>     $a.instance_eval "C"  # => 3
>     $a.instance_eval {C}
>         # ~> NameError: uninitialized constant C [...]
> 
> Can anybody shed some light on this? Thanks a lot!
> 
> Kind regards,
> achim

class A
  C=3
end

$a = A.new
$a.instance_eval "C"
#=> 3

$a.instance_eval {C}
# ~> NameError: uninitialized constant C [...]

Its not being called properly for 1.8

instead use this...

$a.instance_eval {A::C}

A being the class, and C being the constant.

Regards,

- Mac



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