1. Writing Friendly Libraries @seejohnrun

2. $CI =& get_instance();

4. reactor

7. getsparks.org

8. getsparks.org 76 sparks > 16,000 installs

9. getsparks.org katzgrau/getsparks.org seejohnrun/sparks

10. getsparks.org great for internal distribution as well

11. libraries!!!

12. rails huge library community centering on rubygems

13. rails 40 direct 100 total

14. is it bad?

15. nah...

16. let’s share!

19. test ed

20. test able

21. reduce coupling

23. nice_http http library easily mock web requests

26. versioned

27. 0.6.3

28. 0.6. 3 patch version backwards-compatible bug fixes

29. 0. 6 .3 minor version backwards-compatible public functionality

30. 0 .6.3 major version backwards-incompatible public functionality

33. documented

34. externally PHPDoc

35. externally visibility

36. internally PHPDoc

37. internally comments

40. adaptable

41. OO

42. <?php $cache -> set ( 'name' , 'john' ); $cache -> get ( 'name' );

44. namespaced

46. tip: use your library before you write it

47. tip: have someone else read your fake code

48. tip: don’t be lazy. skip out on the shady code

49. tip: confusing code doesn’t make you look cool

50. tip: pull requests are free code lessons

53. no more long library files

54. use config <?php $this -> load -> library ( 'fun' , array ( 'some' => 'option' )); <?php class Fun { public function __construct ( $params = array ()) { $this -> option = array_key_exists ( $params , 'some' ) ? $params [ 'some' ] : 'default' ; } }

55. use config <?php $this -> load -> library ( 'fun' , array ( 'some' => 'option' )); <?php class Fun { public function __construct ( $params = array ()) { $this -> option = isset ( $params[ 'some' ] ) ? $params [ 'some' ] : 'default' ; } }

56. use config <?php $CI = &get_instance(); $CI -> config -> item ( 'fun' );

57. use lang <?php $CI = &get_instance(); $CI -> lang -> line ( 'key' );

58. don’t artificially restrict yourself config/ helpers/ language/ libraries/ models/ views!!!

59. tip: stop coding libraries for php4

62. tip: don’t be a downer

63. tip: go make and share something amazing

64. @seejohnrun @getsparks @getsparks