MicroObjects Technical Practices 20180419

What practices are used to wire in the microObjects style? This presentation goes over the 12 primary practices that produce simple, understandable, testable code resulting in a highly maintainable product.

Transcript

1. @TheQuinnGil https://QuinnGil.com µObjects
2. @TheQuinnGil https://QuinnGil.com Who Am I? • Quinn Gil ◦ @TheQuinnGil ◦ https://QuinnGil.com • Professionally programming 20 years • Passion for helping others write better • Coding is my hobby µObjects
3. @TheQuinnGil https://QuinnGil.com Single Responsibility µObjects to the extreme µObjects
4. @TheQuinnGil https://QuinnGil.com Encapsulation µObjects ?
5. @TheQuinnGil https://QuinnGil.com Encapsulation µObjects Behavior
6. @TheQuinnGil https://QuinnGil.com µObjects Never Return Your Data
7. @TheQuinnGil https://QuinnGil.com µObjects Never Return Your Data
8. @TheQuinnGil https://QuinnGil.com Immutability - Externally Immutable µObjects
9. @TheQuinnGil https://QuinnGil.com Immutability - Externally Immutable µObjects
10. @TheQuinnGil https://QuinnGil.com Immutability - Externally Immutable µObjects
11. @TheQuinnGil https://QuinnGil.com Immutability - Internally Immutable µObjects
12. @TheQuinnGil https://QuinnGil.com Immutability µObjects
13. @TheQuinnGil https://QuinnGil.com No ‘new’ Inline - Inversion of Control µObjects
14. @TheQuinnGil https://QuinnGil.com No ‘new’ Inline - Inversion of Control µObjects
15. @TheQuinnGil https://QuinnGil.com No ‘new’ Inline - Injection µObjects
16. @TheQuinnGil https://QuinnGil.com No ‘new’ Inline - All Knowing µObjects
17. @TheQuinnGil https://QuinnGil.com No ‘new’ Inline - All Knowing µObjects
18. @TheQuinnGil https://QuinnGil.com No ‘new’ Inline - DIY µObjects
19. @TheQuinnGil https://QuinnGil.com Anti-Pattern: Primitive Obsession µObjects
20. @TheQuinnGil https://QuinnGil.com Anti-Pattern: Primitive Obsession µObjects
21. @TheQuinnGil https://QuinnGil.com Anti-Pattern: Primitive Obsession µObjects
22. @TheQuinnGil https://QuinnGil.com Anti-Pattern: Primitive Obsession µObjects
23. @TheQuinnGil https://QuinnGil.com Anti-Pattern: Primitive Obsession µObjects
24. @TheQuinnGil https://QuinnGil.com Anti-Pattern: Primitive Obsession µObjects
25. @TheQuinnGil https://QuinnGil.com Anti-Pattern: Primitive Obsession µObjects
26. @TheQuinnGil https://QuinnGil.com Encapsulate Relationships µObjects
27. @TheQuinnGil https://QuinnGil.com Encapsulate Relationships µObjects
28. @TheQuinnGil https://QuinnGil.com No Nulls µObjects
29. @TheQuinnGil https://QuinnGil.com No Nulls µObjects Null Object Pattern
30. @TheQuinnGil https://QuinnGil.com ‘if’ Only as Guard Clause µObjects
31. @TheQuinnGil https://QuinnGil.com ‘switch’ & ‘else’ Are Always Evil µObjects
32. @TheQuinnGil https://QuinnGil.com ‘switch’ & ‘else’ Are Always Evil µObjects
33. @TheQuinnGil https://QuinnGil.com ‘switch’ & ‘else’ Are Always Evil µObjects
34. @TheQuinnGil https://QuinnGil.com Composition Over Inheritance µObjects
35. @TheQuinnGil https://QuinnGil.com Composition Over Inheritance µObjects
36. @TheQuinnGil https://QuinnGil.com µObjects Interface Everything
37. @TheQuinnGil https://QuinnGil.com No Statics µObjects
38. @TheQuinnGil https://QuinnGil.com No Public Constants µObjects
39. @TheQuinnGil https://QuinnGil.com Never Type Inspection or Reflection µObjects
40. @TheQuinnGil https://QuinnGil.com No Asymmetric Marriage µObjects
41. @TheQuinnGil https://QuinnGil.com No Asymmetric Marriage µObjects
42. @TheQuinnGil https://QuinnGil.com No Asymmetric Marriage µObjects
43. @TheQuinnGil https://QuinnGil.com Operating System Abstraction Layer µObjects
44. @TheQuinnGil https://QuinnGil.com µObjects Practices µObjects • Never Return Your Data • Always Immutable • No ‘new’ Inline • No Primitive Obsession • Encapsulate Relationships • No nulls • ‘if’ Only as Guard Clause • ‘switch’ & ‘else’ Always Evil • Composition Over Inheritance • Interface Everything • No Statics • No Public Constants • No Asymmetric Marriage • OS Abstraction Layer An Object Does A Single Thing
45. @TheQuinnGil https://QuinnGil.com µObjects - What do we get? µObjects Maintainability
46. @TheQuinnGil https://QuinnGil.com µObjects
47. @TheQuinnGil https://QuinnGil.com µObjects µObjects Single Responsibility to the Extreme
48. @TheQuinnGil https://QuinnGil.com µObjects Resources https://QuinnGil.com