Learning Object Oriented Programming

key themes:

• consistency could be something as simple as conditionls (ifs).
  It is useful to be consistent in the patterns.
  This reduces complexity and makes it easier to read the code later.

• Duplication
  As with all principles, moderation is the key.
  Whereever relevant reduce duplication of code logic and data.
  Reduces complexity and improves maintainability and testing.

• Naming
  Methods should be unique in what it does - (single responsibility principle)
  To make this expicit care should be given to name to communicate intent.
  the cost of bad naming increases as the code becomes older.