Two new chapters on value obejcts

Hi!

It has been long since I last wrote about the progress of my book. Two chapters were added since, and both on value objects:

1. Value objects
2. Value object anatomy

Happy reading and, as always, I welcome any feedback!

I recorded a video: FizzBuzz To Chain of Responsibility to DSL using TDD in Java

Sorry for bad narration - I did very minor preparation to record this video. Also sorry for saying "dividable" instead of divisible.

This movie demonstrates implementation a variation of FizzBuzz kata without error checking, but with refactoring towards the Chain of Responsibility pattern. The first part is done using TDD and triangulation.

New chapter: Viewing object composition as a language

Hi!

New chapter on viewing object composition as a language was added. This chapter is about how the idea of having a system of composable objects leads to inventing a set of mini domain-specific languages.

Happy reading and I really welcome any feedback!