Ruby_through_Reserved_Words.pdf

Transcript

1. Powered by Rabbit 2.2.1 Ruby through Reserved Words Heroku Ruby Association Yukihiro "Matz" Matsumoto まつもとゆきひろ @yukihiro_matz
2. Powered by Rabbit 2.2.1 　 Ruby has 41 reserved words
3. Powered by Rabbit 2.2.1 　 Each reflects (early) design decisions
4. Powered by Rabbit 2.2.1 　 The story behinds the words
5. Powered by Rabbit 2.2.1 　 begin/end
6. Powered by Rabbit 2.2.1 　 Comb Style Indentation
7. Powered by Rabbit 2.2.1 　 Inherited from Eiffel
8. Powered by Rabbit 2.2.1 　 along with rescue, ensure, retry
9. Powered by Rabbit 2.2.1 　 break/next/redo
10. Powered by Rabbit 2.2.1 　 not continue
11. Powered by Rabbit 2.2.1 　 From Perl (shorter)
12. Powered by Rabbit 2.2.1 　 class/def
13. Powered by Rabbit 2.2.1 　 From Python
14. Powered by Rabbit 2.2.1 　 module
15. Powered by Rabbit 2.2.1 　 Lisp (Flavors)
16. Powered by Rabbit 2.2.1 　 Mix-in
17. Powered by Rabbit 2.2.1 　 if/else/elsif
18. Powered by Rabbit 2.2.1 　 elsif
19. Powered by Rabbit 2.2.1 　 elseif, elif, elsif
20. Powered by Rabbit 2.2.1 　 The shortest pronounceable
21. Powered by Rabbit 2.2.1 　 then
22. Powered by Rabbit 2.2.1 　 The stop words
23. Powered by Rabbit 2.2.1 　 then and class methods
24. Powered by Rabbit 2.2.1 　 unless
25. Powered by Rabbit 2.2.1 　 From Perl
26. Powered by Rabbit 2.2.1 　 No elsif or elsunless
27. Powered by Rabbit 2.2.1 　 while
28. Powered by Rabbit 2.2.1 　 Simple loop
29. Powered by Rabbit 2.2.1 　 for/in
30. Powered by Rabbit 2.2.1 　 From Python?
31. Powered by Rabbit 2.2.1 　 until
32. Powered by Rabbit 2.2.1 　 From Perl
33. Powered by Rabbit 2.2.1 　 true/false/nil
34. Powered by Rabbit 2.2.1 　 Truthy and Falsy
35. Powered by Rabbit 2.2.1 　 Three value model
36. Powered by Rabbit 2.2.1 　 Inspired by Lisp
37. Powered by Rabbit 2.2.1 　 and/or/not
38. Powered by Rabbit 2.2.1 　 From Perl
39. Powered by Rabbit 2.2.1 　 Only for precedence
40. Powered by Rabbit 2.2.1 　 do/yield
41. Powered by Rabbit 2.2.1 　 The block
42. Powered by Rabbit 2.2.1 　 From CLU (1970s, MIT)
43. Powered by Rabbit 2.2.1 　 The biggest invention of Ruby
44. Powered by Rabbit 2.2.1 　 rescue/ensure/retry
45. Powered by Rabbit 2.2.1 　 Exception handling
46. Powered by Rabbit 2.2.1 　 Inspired by Eiffel
47. Powered by Rabbit 2.2.1 　 Icon (1970s, U of Arizona)
48. Powered by Rabbit 2.2.1 　 Success/Failure model
49. Powered by Rabbit 2.2.1 　 return
50. Powered by Rabbit 2.2.1 　 From C
51. Powered by Rabbit 2.2.1 　 Multiple values (Tuple)
52. Powered by Rabbit 2.2.1 　 self/super
53. Powered by Rabbit 2.2.1 　 Smalltalk
54. Powered by Rabbit 2.2.1 　 alias/undef
55. Powered by Rabbit 2.2.1 　 From Sather (1980s, UCB)
56. Powered by Rabbit 2.2.1 　 BEGIN/END
57. Powered by Rabbit 2.2.1 　 From Awk
58. Powered by Rabbit 2.2.1 　 Not recommendation anymore
59. Powered by Rabbit 2.2.1 　 __FILE__/__LINE__
60. Powered by Rabbit 2.2.1 　 From C (cpp)
61. Powered by Rabbit 2.2.1 　 __ENCODING__
62. Powered by Rabbit 2.2.1 　 From Ruby1.9 (encoding)
63. Powered by Rabbit 2.2.1 　 UCS vs CSI
64. Powered by Rabbit 2.2.1 　 Unicode
65. Powered by Rabbit 2.2.1 　 BDFL
66. Powered by Rabbit 2.2.1 　 Benevolent Dictator For Life
67. Powered by Rabbit 2.2.1 　 How to make decisions
68. Powered by Rabbit 2.2.1 　 Scope Background Motivation
69. Powered by Rabbit 2.2.1 　 Committee
70. Powered by Rabbit 2.2.1 　 Voting
71. Powered by Rabbit 2.2.1 　 A ship would climb a mountain with many captains
72. Powered by Rabbit 2.2.1 　 too many cooks spoil the broth