From: Iain Barnett <iainspeed@...>
Date: 2012-11-07T18:48:09+09:00
Subject: class variables in Rack middleware

I see a lot of class variables used in Rack middleware, and this is probably the only place I see them used anymore. In each case, it seems to me that a class instance variable would've done the trick too, so is there some reason for using a class variable in the case of rack middleware that is better, or is it just less typing for the dev?

Any insights shared will be much appreciated.

Iain