Notes

• Refactoring and "Bad Smells in Code" [MF99] [JK05]. Code smells are certain structures in the code that "smell bad" and indicate problems that can be solved by a refactoring. The most common code smells are:
  • complicated code (including complicated/growing conditional code),
  • duplicated code,
  • inflexible code (that must be changed whenever requirements change), and
  • unclear code (that doesn't clearly communicate its intent).

Design Patterns

23 software design patterns

• Creational Patterns

  • Factory Method: Define an interface for creating an object, but let subclasses decide which class to instantiate

  • Abstract Factory: Provide an interface for creating families or dependent objects without specifying their concrete classes.

• Structural Patterns

• Behavioral Patterns

Tools

• Class Diagram: https://www.visual-paradigm.com/solution/freeumltool/

Documents

• https://sourcemaking.com/design_patterns
• https://refactoring.guru/design-patterns