"Ruby Object Model: eBook" is an eBook about the intermediate layer of Ruby.
It covers the key concepts behind classes objects and modules.
If you don’t know that the Module class is an instance of the Class class, stored in a constant and whose instances cannot be instantiated then you’ll probably learn something. :-)
Fun Facts about Ruby - Volume 1 is a series of cards. This first volume is composed of 30 cards. Each card proposes a code snippet that details a fun notion of the Ruby language.
