From: Esad Hajdarevic <esad.nospam@...>
Date: 2006-10-19T18:35:13+09:00
Subject: instance variable not initialized warning

Hi!

In the following piece of code:

class Foo
   def bar
     if @var.nil?
       puts "First assignment"
       @var = 1;
      else
       @var +=1;
      end
   end
end

Foo.new.bar

When I run ruby (1.8.4)with -d ($DEBUG=true) I get to see the following 
warning:

test.rb:3: warning: instance variable @var not initialized

Does it make sense to spit out this warning even if you are doing 
something safe such as calling Object#nil?

What do you think?