From: Joel VanderWerf <vjoel@...>
Date: 2008-07-22T04:54:22+09:00
Subject: Re: Thread-local global variables?


class Module
   def thattr name
     module_eval <<-code
       def #{ name }() Thread.current[#{ name.to_s.inspect }] end
       def #{ name }=(v) Thread.current[#{ name.to_s.inspect }] = v end
     code
   end
end

class Foo
   thattr :x
end

foo = Foo.new
bar = Foo.new
foo.x = 1
p bar.x # ==> 1

This looks a little weird to me. But it does have the advantage that the 
method is defined only in the scope where you use it. (In a way, that's 
a disadvantage, too, since it obscures the fact that "x" really does 
have a bigger scope, namely the Thread.current#[] method.)

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407