I'm a Smalltalk beginner, currently playing with Pharo and I'm curious about a choice in the subclass message: the keyword instanceVariableNames wants something able to answer to the subStrings message. I wonder why it doesn't expect something more structured like an array, since what is needed is a collection of symbols.
Object subclass: #Experiment instanceVariableNames: #(#foo #bar).
My only guessing at this is some historical reason: maybe not all Smalltalks have arrays or their syntax differs to much to slip into an inner message as subclass. Is there any other explanation?
In the Pharo vision document, one of the points is to change that and have a real notion of instance variables. Check these links if you are interested: