Software Components @ RUG-B

Transcript

1. Software Components Why - How - What Stephan Hagemann - 2016-11-03 - RUG-B @shageman
2. WRITE BETTER SOFTW ARE @shageman
3. @shageman
4. WHAT IS A COMPONENT? @shageman
5. Labeled Content + 
 
 Explicit Dependencies @shageman
6. Labeled Content + 
 
 Explicit Dependencies @shageman
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8. Labeled Content + 
 Explicit Dependencies @shageman
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14. A depends on B … A B @shageman
15. thus B can not depend on A A B X @shageman
16. and this doesn’t work either A B X C @shageman
17. X and Y as the same thing @shageman Y X
18. Uncle Bob says … I like to draw these lines. Architecture is the art of drawing lines. With the interesting rule that once you have drawn the lines, all the dependencies that cross that line go in the same direction… @shageman
19. This is why objects are typically not components… @shageman
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21. WHY COMPONENTS? @shageman
22. Growing size @shageman
23. Exploding complexity SIZE POSSIBLE INTERACTIONS @shageman
24. Effect of structure VS @shageman
25. SIZE POSSIBLE INTERACTIONS Reduced exploding complexity @shageman
26. @shageman
27. Communication @shageman
28. Collaboration @shageman
29. Creation @shageman
30. Maintenance @shageman
31. Comprehension @shageman
32. HOW TO IMPLEMENT COMPONENTS? @shageman
34. Code!! @shageman
35. And in other languages? Ruby/Rails: Gems + Engines Java: Modules Go: packages Javascript: packages (in npm lingo) C: file compiling + linking @shageman
36. HOW TO DETERMINE WHAT SHOULD BE A COMPONENT? @shageman
37. SUMMARY @shageman
38. Components = Labeled Content + 
 Explicit Dependencies @shageman WHAT
39. Components improve… communication creation collaboration maintenance comprehension complexity @shageman WHY
40. In Ruby and Rails… gems and engines can be used as components @shageman HOW
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43. https://leanpub.com/cbra/c/rugb @shageman Discount Code!
44. Further reading https://leanpub.com/cbra http://cbra.info https://github.com/shageman http://appcontinuum.io @shageman
45. THANKS! @shageman https://leanpub.com/cbra/c/rugb