open new file ex39.rb
add Hashes
open new file ex40.rb
Add a First Class example
Add a First Class example
Modules, Classes and Objects
open new file 41.rb
Learning To Speak Object Oriented
open new file ex42.rb
Objects and Classes
open new file ex43.rb
Gothons From Planet Percal #25
open new file ex44.rb
Separating Inheritance and composition
Inheritance and Composition
commod words used