Ruby, Smalltalk and Class Variables - Pat Shaughnessy

Many of the ideas behind Ruby’s object model were developed for Smalltalk in the 1970s. A couple weeks ago an article by Ernie Miller got me interested in how class variables work in Ruby. After doing a bit of research, I found that class variables have been a perennial source of confusion. In fact, John Nunemaker wrote an article called Class and Instance Variables In Ruby way back in 2006 that s