RubyConf China 17/11/2012 - Become a Better Developer You Can

Video: https://www.youtube.com/watch?v=DeBsmdDmB9A

Transcript

1. @fredwu Development Team Lead 1 Saturday, 17 November 12
2. “BECOME A BETTER DEVELOPER YOU CAN” - Yoda 2 Saturday, 17 November 12
3. MY BACKGROUND 3 Saturday, 17 November 12
4. 4 Saturday, 17 November 12
5. 4 Saturday, 17 November 12
6. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) 4 Saturday, 17 November 12
7. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem 4 Saturday, 17 November 12
8. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express 4 Saturday, 17 November 12
9. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia 4 Saturday, 17 November 12
10. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software 4 Saturday, 17 November 12
11. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) 4 Saturday, 17 November 12
12. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university 4 Saturday, 17 November 12
13. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university • 2006 Discovered Ruby and Ruby on Rails, and switched to OS X because of Textmate 4 Saturday, 17 November 12
14. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university • 2006 Discovered Ruby and Ruby on Rails, and switched to OS X because of Textmate • 2008 Started professionally as a web developer (HTML, CSS, PHP and JavaScript) 4 Saturday, 17 November 12
15. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university • 2006 Discovered Ruby and Ruby on Rails, and switched to OS X because of Textmate • 2008 Started professionally as a web developer (HTML, CSS, PHP and JavaScript) • 2010 Started programming in Ruby full time (mostly) 4 Saturday, 17 November 12
16. • 1997 Got my first computer (Intel Pentium MMX 166Mhz) • 1997 Started using BBS (上海热线) and the Internet via 33.6Kbps modem • 1997 Made my first ever HTML web page in Microsoft Frontpage Express • 1998 Moved to Australia • 2001 Started playing with Perl (雷傲), ASP (动⺴⽹网) and PHP (Discuz!) forum software • 2004 Started learning PHP and JavaScript in TAFE (pre-university bridge) • 2006 Started working part-time as a junior developer whilst studying in university • 2006 Discovered Ruby and Ruby on Rails, and switched to OS X because of Textmate • 2008 Started professionally as a web developer (HTML, CSS, PHP and JavaScript) • 2010 Started programming in Ruby full time (mostly) • 2010 Started contributing to many open source ruby projects, including Ruby on Rails 4 Saturday, 17 November 12
17. AUSTRALIA HAS A STRONG RUBY COMMUNITY 5 Saturday, 17 November 12
18. 6 Saturday, 17 November 12
19. Dr Nic Williams Author of Rails Textmate bundle, works at Engine Yard Ryan Bigg Author of Rails 3 in Action, 2011 Ruby Hero Pat Allan Author of Thinking Sphinx, 2009 Ruby Hero Xavier Shay Author of Cane and Enki, works at Square Ben Schwarz Member of W3C’s CSS Working Group Darcy Laycock Author of API Smith, 2011 Ruby Hero Justin French Author of Formtastic Daniel Neighman Author of Warden, works at Square Ben Hoskings Author of Babushka Marcus Crafter Author of Sprinkle Charlie Somerville Author of Slash language, a talented 18 year old! Jack Chen (Chendo) Contributor to iTerm2 Mikel Lindsaar Author of Mail, rails core committer John Barton Cofounder of Goodfil.ms, dev manager of Envato for 3+ years Paul Annesley Built 99designs, works at SitePoint Gareth Townsend Founder of Melbourne Cocoaheads Ivan Vanderbyl Founder of Crashlog Glen Maddern Cofounder of Goodfil.ms Alan Harper Author of Rubyzip James Healy Author of PDF::Reader, maintainer of Prawn Florian Hanke Author of Picky 6 Saturday, 17 November 12
20. DISCLAIMER I am still a n00b. ⼩小⼩小菜⻦鸟。 But I care, so I share. 抛砖引⽟玉。 7 Saturday, 17 November 12
21. THOUGHTS ON SOFTWARE DEVELOPMENT 8 Saturday, 17 November 12
22. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 8 Saturday, 17 November 12
23. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 • Software engineering is like playing Starcraft - always check your mini-map. 软件⼯工程有如星际争霸——需经常关注迷你地图，以⼤大局为重。 8 Saturday, 17 November 12
24. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 • Software engineering is like playing Starcraft - always check your mini-map. 软件⼯工程有如星际争霸——需经常关注迷你地图，以⼤大局为重。 • Experience is as important as talent, if not more important. 经验与天赋同重要。 8 Saturday, 17 November 12
25. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 • Software engineering is like playing Starcraft - always check your mini-map. 软件⼯工程有如星际争霸——需经常关注迷你地图，以⼤大局为重。 • Experience is as important as talent, if not more important. 经验与天赋同重要。 • Technical debt is a debt, the longer you wait, the more interests you pay. 技术债务——拖⽋欠越久，偿还越多。 8 Saturday, 17 November 12
26. THOUGHTS ON SOFTWARE DEVELOPMENT • Second system syndrome - avoid total rewrites. 第⼆二系统综合症——避免重写。 • Software engineering is like playing Starcraft - always check your mini-map. 软件⼯工程有如星际争霸——需经常关注迷你地图，以⼤大局为重。 • Experience is as important as talent, if not more important. 经验与天赋同重要。 • Technical debt is a debt, the longer you wait, the more interests you pay. 技术债务——拖⽋欠越久，偿还越多。 • Choose the application architecture wisely. 谨慎选择软件架构。 8 Saturday, 17 November 12
27. APPLICATION ARCHITECTURE SHOWCASE 9 Saturday, 17 November 12
28. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 9 Saturday, 17 November 12
29. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 • The profile system will potentially be used standalone. ⽤用户帐户系统未来可能会被独⽴立使⽤用。 9 Saturday, 17 November 12
30. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 • The profile system will potentially be used standalone. ⽤用户帐户系统未来可能会被独⽴立使⽤用。 • We need plugin-able “modules”. 需可插⼊入式模块系统。 9 Saturday, 17 November 12
31. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 • The profile system will potentially be used standalone. ⽤用户帐户系统未来可能会被独⽴立使⽤用。 • We need plugin-able “modules”. 需可插⼊入式模块系统。 • There will potentially be 3rd party modules. 未来可能会有第三⽅方开发的模块。 9 Saturday, 17 November 12
32. APPLICATION ARCHITECTURE SHOWCASE • We need a profile system to hold user data. ⽤用户帐户系统。 • The profile system will potentially be used standalone. ⽤用户帐户系统未来可能会被独⽴立使⽤用。 • We need plugin-able “modules”. 需可插⼊入式模块系统。 • There will potentially be 3rd party modules. 未来可能会有第三⽅方开发的模块。 • Of course, the development timeline is tight. 开发周期很紧凑。 9 Saturday, 17 November 12
33. SOLUTION I THE PERFECT WAY Profile (API) Platform Module Module Module 10 Saturday, 17 November 12
34. PERFECT? NO! 11 Saturday, 17 November 12
35. PERFECT? NO! • Longer development time. 开发周期过⻓长。 11 Saturday, 17 November 12
36. PERFECT? NO! • Longer development time. 开发周期过⻓长。 • Can’t guarantee the usefulness of the API layer for 3rd party developers. 不可预知 API 层在未来是否还可有效利⽤用。 11 Saturday, 17 November 12
37. PERFECT? NO! • Longer development time. 开发周期过⻓长。 • Can’t guarantee the usefulness of the API layer for 3rd party developers. 不可预知 API 层在未来是否还可有效利⽤用。 • More complexity == more chances to screw up. 系统越复杂，越容易出错。 11 Saturday, 17 November 12
38. SOLUTION II THE EASY WAY Platform Profile Module Module Module 12 Saturday, 17 November 12
39. EASY, BUT FOR HOW LONG? 13 Saturday, 17 November 12
40. EASY, BUT FOR HOW LONG? • One app is more difficult to scale out. 单⼀一系统相对较难向外扩展。 13 Saturday, 17 November 12
41. EASY, BUT FOR HOW LONG? • One app is more difficult to scale out. 单⼀一系统相对较难向外扩展。 • It is also more difficult to assign tasks. 单⼀一系统相对较难安排团队成员任务。 13 Saturday, 17 November 12
42. EASY, BUT FOR HOW LONG? • One app is more difficult to scale out. 单⼀一系统相对较难向外扩展。 • It is also more difficult to assign tasks. 单⼀一系统相对较难安排团队成员任务。 • It is more likely to have leaky code. 单⼀一系统相对更难有效封装。 13 Saturday, 17 November 12
43. SOLUTION III THE CHOSEN WAY Profile (API) Platform Module Module Module 14 Saturday, 17 November 12
44. A BALANCED SOLUTION IS A GOOD SOLUTION 15 Saturday, 17 November 12
45. A BALANCED SOLUTION IS A GOOD SOLUTION • Don’t over-engineer. 避免过度⼯工程。 15 Saturday, 17 November 12
46. A BALANCED SOLUTION IS A GOOD SOLUTION • Don’t over-engineer. 避免过度⼯工程。 • Good degree of separation of concern. 注重关注点分离。 15 Saturday, 17 November 12
47. A BALANCED SOLUTION IS A GOOD SOLUTION • Don’t over-engineer. 避免过度⼯工程。 • Good degree of separation of concern. 注重关注点分离。 • Internal interfaces are easier than external APIs: 内部接⼝口相对外部 API 更易开发： ‣ @gateway ||= PlatformModuleGateway.new(args) ‣ mod = module_controller(module_name).new(args) ‣ mod.validate_input ‣ mod.render_view 15 Saturday, 17 November 12
48. OOPS! 16 Saturday, 17 November 12
49. OOPS! 17 Saturday, 17 November 12
50. CRAP PRINCIPLES 18 Saturday, 17 November 12
51. 19 Saturday, 17 November 12
52. Contrast 对⽐比度 19 Saturday, 17 November 12
53. Contrast 对⽐比度 Repetition 重复度 19 Saturday, 17 November 12
54. Contrast 对⽐比度 Repetition 重复度 Alignment 排列度 19 Saturday, 17 November 12
55. Contrast 对⽐比度 Repetition 重复度 Alignment 排列度 Proximity 接近度 19 Saturday, 17 November 12
56. SOLID PRINCIPLES 20 Saturday, 17 November 12
57. 21 Saturday, 17 November 12
58. Single responsibility 单⼀一责任 21 Saturday, 17 November 12
59. Single responsibility 单⼀一责任 Open/close 开闭 21 Saturday, 17 November 12
60. Single responsibility 单⼀一责任 Open/close 开闭 Liskov substitution ⾥里⽒氏替换 21 Saturday, 17 November 12
61. Single responsibility 单⼀一责任 Open/close 开闭 Liskov substitution ⾥里⽒氏替换 Interface segregation 接⼝口分离 21 Saturday, 17 November 12
62. Single responsibility 单⼀一责任 Open/close 开闭 Liskov substitution ⾥里⽒氏替换 Interface segregation 接⼝口分离 Dependency inversion 依赖倒置 21 Saturday, 17 November 12
63. FOUR SIMPLE RULES 22 Saturday, 17 November 12
64. 23 Saturday, 17 November 12
65. Passes all the tests. 23 Saturday, 17 November 12
66. Passes all the tests. Contains no duplication. 23 Saturday, 17 November 12
67. Passes all the tests. Contains no duplication. Expresses the intent. 23 Saturday, 17 November 12
68. Passes all the tests. Contains no duplication. Expresses the intent. Minimises the number of classes and methods. 23 Saturday, 17 November 12
69. Until you have learnt Ruby first. DO NOT LEARN RAILS 24 Saturday, 17 November 12
70. Practice, Practice and Practice FAST TRACK 25 Saturday, 17 November 12
71. CONTRIBUTE TO OPEN SOURCE PROJECTS 26 Saturday, 17 November 12
72. CONTRIBUTE TO OPEN SOURCE PROJECTS • Reading code is just as important as writing code. 阅读代码与编写代码同重要。 26 Saturday, 17 November 12
73. CONTRIBUTE TO OPEN SOURCE PROJECTS • Reading code is just as important as writing code. 阅读代码与编写代码同重要。 • Learn from the masters. 向⼤大师们学习。 26 Saturday, 17 November 12
74. CONTRIBUTE TO OPEN SOURCE PROJECTS • Reading code is just as important as writing code. 阅读代码与编写代码同重要。 • Learn from the masters. 向⼤大师们学习。 • Take some, give some - sharing is awesome. 不断收获的同时，别忘了付出。 26 Saturday, 17 November 12
75. CONTRIBUTE TO OPEN SOURCE PROJECTS • Reading code is just as important as writing code. 阅读代码与编写代码同重要。 • Learn from the masters. 向⼤大师们学习。 • Take some, give some - sharing is awesome. 不断收获的同时，别忘了付出。 • Make things more useful for yourself therefore for others too. 对⾃自⼰己有⽤用的东⻄西，也许对他⼈人也有⽤用。 26 Saturday, 17 November 12
76. CONTRIBUTE TO OPEN SOURCE PROJECTS 26 Saturday, 17 November 12
77. CONTRIBUTE TO OPEN SOURCE PROJECTS 27 Saturday, 17 November 12
78. CONTRIBUTE TO OPEN SOURCE PROJECTS PHP CodeIgniter PHP Kohana PHP Vanilla Forums PHP Yii Framework JAVASCRIPT AutoSuggest RUBY Ruby on Rails RUBY RailsConfig RUBY Slim RUBY ORM Adapter RUBY Delayed Job RUBY Parallel Tests 27 Saturday, 17 November 12
79. OPEN SOURCE YOUR OWN WORK 28 Saturday, 17 November 12
80. OPEN SOURCE YOUR OWN WORK • Made something useful? Release it! 写了有⽤用的好玩意⼉儿？发布吧，勇敢的少年！ 28 Saturday, 17 November 12
81. OPEN SOURCE YOUR OWN WORK • Made something useful? Release it! 写了有⽤用的好玩意⼉儿？发布吧，勇敢的少年！ • Be critisied of your work, and learn from mistakes. 虚⼼心接受意⻅见与批评，由错误中学习。 28 Saturday, 17 November 12
82. OPEN SOURCE YOUR OWN WORK • Made something useful? Release it! 写了有⽤用的好玩意⼉儿？发布吧，勇敢的少年！ • Be critisied of your work, and learn from mistakes. 虚⼼心接受意⻅见与批评，由错误中学习。 • Be proud of your work, and be recognised. 为⾃自⼰己的⾟辛苦成果感到⾃自豪。 28 Saturday, 17 November 12
83. OPEN SOURCE YOUR OWN WORK • Made something useful? Release it! 写了有⽤用的好玩意⼉儿？发布吧，勇敢的少年！ • Be critisied of your work, and learn from mistakes. 虚⼼心接受意⻅见与批评，由错误中学习。 • Be proud of your work, and be recognised. 为⾃自⼰己的⾟辛苦成果感到⾃自豪。 • Make a little dent in the universe. ⼀一点⼩小⼩小的贡献的话，可以哟〜～ 28 Saturday, 17 November 12
84. OPEN SOURCE YOUR OWN WORK 28 Saturday, 17 November 12
85. OPEN SOURCE YOUR OWN WORK 29 Saturday, 17 November 12
86. OPEN SOURCE YOUR OWN WORK RUBY Action Throttler Throttle actions based on configurable duration and limit. RUBY Angel Nest An open source 'clone' of AngelList. RUBY API Taster Visually test your Rails application's API. RUBY AppReset Resets (and if available, seeds) your databases. RUBY Bustle Activities recording and retrieving using a simple Pub/Sub-like interface. RUBY Datamappify Turn ActiveRecord into DataMapper (sort of)! RUBY Haml2Slim Convert Haml templates to Slim templates. RUBY Inherited Resources Views DRY your view files! RUBY Ruby Decorators Ruby method decorators inspired by Python. RUBY Security Guard A collection of useful tools for auditing data. RUBY Slim Bundle A Textmate / Sublime Text bundle for Slim. PHP Authlite A lightweight, flexible Auth module for Kohana. PHP KThrottler Throttle actions based on configurable duration and limit. PHP PHamlP A bridge between Kohana and PHamlP. JAVASCRIPT Endless Scroll Endless / infinite scrolling solution for jQuery. JAVASCRIPT Inline Confirmation Less obtrusive confirmation dialogues. JAVASCRIPT Skinny Coffee Machine A simple state machine with observers. JAVASCRIPT Slideshow Lite A lightweight slideshow plugin for jQuery. 29 Saturday, 17 November 12
87. 30 Saturday, 17 November 12
88. Credit: travis-ci.com 30 Saturday, 17 November 12
89. SLIM A Case Study 31 Saturday, 17 November 12
90. 32 Saturday, 17 November 12
91. 33 Saturday, 17 November 12
92. 33 Saturday, 17 November 12
93. 33 Saturday, 17 November 12
94. 34 Saturday, 17 November 12
95. 35 Saturday, 17 November 12
96. 36 Saturday, 17 November 12
97. 37 Saturday, 17 November 12
98. 38 Saturday, 17 November 12
99. 39 Saturday, 17 November 12
100. 40 Saturday, 17 November 12
101. 41 Saturday, 17 November 12
102. 42 Saturday, 17 November 12
103. 43 Saturday, 17 November 12
104. 44 Saturday, 17 November 12
105. 45 Saturday, 17 November 12
106. 46 Saturday, 17 November 12
107. 47 Saturday, 17 November 12
108. 48 Saturday, 17 November 12
109. DO FREELANCE WORK 49 Saturday, 17 November 12
110. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 49 Saturday, 17 November 12
111. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 • Like open source work, but with some $$$. 赚点外快。 49 Saturday, 17 November 12
112. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 • Like open source work, but with some $$$. 赚点外快。 • Be involved in projects different to those at your day job. 不同的项⺫⽬目体验与经验。 49 Saturday, 17 November 12
113. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 • Like open source work, but with some $$$. 赚点外快。 • Be involved in projects different to those at your day job. 不同的项⺫⽬目体验与经验。 • Communication skills with your clients. 客户沟通经验。 49 Saturday, 17 November 12
114. DO FREELANCE WORK • Like open source work, but with deadlines and pressure. 截⽌止期限与压⼒力。 • Like open source work, but with some $$$. 赚点外快。 • Be involved in projects different to those at your day job. 不同的项⺫⽬目体验与经验。 • Communication skills with your clients. 客户沟通经验。 • Communication skills with your remote team members. 远程团队沟通经验。 49 Saturday, 17 November 12
115. DO FREELANCE WORK 49 Saturday, 17 November 12
116. AND LASTLY, YOUR DAY JOB 50 Saturday, 17 November 12
117. AND LASTLY, YOUR DAY JOB • You spend most of your hours awake at your day job, make it count! 50 Saturday, 17 November 12
118. AND LASTLY, YOUR DAY JOB • You spend most of your hours awake at your day job, make it count! • Know what you are looking for. 知道⾃自⼰己想要什么。 50 Saturday, 17 November 12
119. AND LASTLY, YOUR DAY JOB • You spend most of your hours awake at your day job, make it count! • Know what you are looking for. 知道⾃自⼰己想要什么。 • What can you get out of working at the company? 在这家公司⼯工作，能学习到什么？ 50 Saturday, 17 November 12
120. AND LASTLY, YOUR DAY JOB • You spend most of your hours awake at your day job, make it count! • Know what you are looking for. 知道⾃自⼰己想要什么。 • What can you get out of working at the company? 在这家公司⼯工作，能学习到什么？ • What did you get out of working at the company? 在这家公司⼯工作，学习到了什么？ 50 Saturday, 17 November 12
121. AND LASTLY, YOUR DAY JOB 50 Saturday, 17 November 12
122. PERSONAL BRANDING 51 Saturday, 17 November 12
123. PERSONAL BRANDING • Designers have online portfolios, what about us developers? 51 Saturday, 17 November 12
124. PERSONAL BRANDING • Designers have online portfolios, what about us developers? • Blog - show me your thoughts! 51 Saturday, 17 November 12
125. PERSONAL BRANDING • Designers have online portfolios, what about us developers? • Blog - show me your thoughts! • Twitter/Weibo - show me your passion! 51 Saturday, 17 November 12
126. PERSONAL BRANDING • Designers have online portfolios, what about us developers? • Blog - show me your thoughts! • Twitter/Weibo - show me your passion! • GitHub - show me your code! 51 Saturday, 17 November 12
127. PERSONAL BRANDING • Designers have online portfolios, what about us developers? • Blog - show me your thoughts! • Twitter/Weibo - show me your passion! • GitHub - show me your code! • LinkedIn - show me your resume! 51 Saturday, 17 November 12
128. PERSONAL BRANDING 52 Saturday, 17 November 12
129. PERSONAL BRANDING • Build up your network 拓展交际圈 • Establish your reputation 树⽴立好名声 • People will endorse your work 让更多⼈人赞誉你的成果 52 Saturday, 17 November 12
130. 53 Saturday, 17 November 12
131. We can talk the talk 53 Saturday, 17 November 12
132. LET’S WALK THE WALK We can talk the talk 53 Saturday, 17 November 12
133. 54 Saturday, 17 November 12
134. How about a fun little task... 54 Saturday, 17 November 12
135. A SMALL CODE TEST How about a fun little task... 54 Saturday, 17 November 12
136. 55 Saturday, 17 November 12
137. 55 Saturday, 17 November 12
138. 55 Saturday, 17 November 12
139. 55 Saturday, 17 November 12
140. A BAD SOLUTION 56 Saturday, 17 November 12
141. A BAD SOLUTION 57 Saturday, 17 November 12
142. ANOTHER BAD SOLUTION 58 Saturday, 17 November 12
143. ANOTHER BAD SOLUTION 59 Saturday, 17 November 12
144. A GOOD SOLUTION 60 Saturday, 17 November 12
145. A GOOD SOLUTION 61 Saturday, 17 November 12
146. ANOTHER GOOD SOLUTION 62 Saturday, 17 November 12
147. ANOTHER GOOD SOLUTION 63 Saturday, 17 November 12
148. 64 Saturday, 17 November 12
149. And behold, for a solution that... 64 Saturday, 17 November 12
150. BLOWS YOUR MIND ޵䙽੧໨ʂ And behold, for a solution that... 64 Saturday, 17 November 12
151. A 坑爹 SOLUTION 65 Saturday, 17 November 12
152. A 坑爹 SOLUTION 66 Saturday, 17 November 12
153. A 坑爹 SOLUTION 66 Saturday, 17 November 12
154. A 坑爹 SOLUTION 67 Saturday, 17 November 12
155. A 坑爹 SOLUTION 你妹啊！ 67 Saturday, 17 November 12
156. 68 Saturday, 17 November 12
157. Writing features is (usually) not enough... 68 Saturday, 17 November 12
158. WE NEED TESTS! Writing features is (usually) not enough... 68 Saturday, 17 November 12
159. 69 Saturday, 17 November 12
160. “I get paid for code that works, not for tests, so my philosophy is to test as little as possible to reach a given level of confidence.” -- Kent Beck 69 Saturday, 17 November 12
161. EFFECTIVE TESTS 70 Saturday, 17 November 12
162. EFFECTIVE TESTS 70 Saturday, 17 November 12
163. EFFECTIVE TESTS • They are describing ActiveRecord behaviours. 70 Saturday, 17 November 12
164. EFFECTIVE TESTS • They are describing ActiveRecord behaviours. • Allow mass assignments on foreign keys is wrong. 70 Saturday, 17 November 12
165. EFFECTIVE TESTS • They are describing ActiveRecord behaviours. • Allow mass assignments on foreign keys is wrong. • They are testing how methods are implemented. 70 Saturday, 17 November 12
166. EFFECTIVE TESTS • They are describing ActiveRecord behaviours. • Allow mass assignments on foreign keys is wrong. • They are testing how methods are implemented. • No confidence gained. 70 Saturday, 17 November 12
167. DE-DUPLICATE TEST CASES 71 Saturday, 17 November 12
168. DE-DUPLICATE TEST CASES 72 Saturday, 17 November 12
169. DE-DUPLICATE TEST CASES 72 Saturday, 17 November 12
170. DE-DUPLICATE TEST CASES 72 Saturday, 17 November 12
171. DE-DUPLICATE TEST CASES 72 Saturday, 17 November 12
172. REFACTOR IN THE WILD Improve code readability and maintainability 73 Saturday, 17 November 12
173. KEEP CONTROLLERS CLEAN 74 Saturday, 17 November 12
174. 75 Saturday, 17 November 12
175. 75 Saturday, 17 November 12
176. 75 Saturday, 17 November 12
177. 75 Saturday, 17 November 12
178. 75 Saturday, 17 November 12
179. 76 Saturday, 17 November 12
180. A MORE COMPLETE EXAMPLE 77 Saturday, 17 November 12
181. PROBLEM 78 Saturday, 17 November 12
182. PROBLEM • A user has many trips 78 Saturday, 17 November 12
183. PROBLEM • A user has many trips • Each trip may contain more than one stops, e.g. • Beijing -> Shanghai • Shanghai -> Hongkong 78 Saturday, 17 November 12
184. PROBLEM • A user has many trips • Each trip may contain more than one stops, e.g. • Beijing -> Shanghai • Shanghai -> Hongkong • We only want to display the first stop from each trip 78 Saturday, 17 November 12
185. 79 Saturday, 17 November 12
186. 79 Saturday, 17 November 12
187. 79 Saturday, 17 November 12
188. 79 Saturday, 17 November 12
189. 79 Saturday, 17 November 12
190. 79 Saturday, 17 November 12
191. 79 Saturday, 17 November 12
192. 79 Saturday, 17 November 12
193. 79 Saturday, 17 November 12
194. 80 Saturday, 17 November 12
195. 80 Saturday, 17 November 12
196. 81 Saturday, 17 November 12
197. 81 Saturday, 17 November 12
198. A RUBY-CHINA EXAMPLE Albeit an old example, but nonetheless... 82 Saturday, 17 November 12
199. 83 Saturday, 17 November 12
200. 83 Saturday, 17 November 12
201. 83 Saturday, 17 November 12
202. 83 Saturday, 17 November 12
203. 83 Saturday, 17 November 12
204. 84 Saturday, 17 November 12
205. 85 Saturday, 17 November 12
206. REFACTOR + OPEN SOURCE 86 Saturday, 17 November 12
207. IDENTIFY THE ISSUE 87 Saturday, 17 November 12
208. IDENTIFY THE ISSUE 87 Saturday, 17 November 12
209. ATTEMPT TO REFACTOR 88 Saturday, 17 November 12
210. ATTEMPT TO REFACTOR 88 Saturday, 17 November 12
211. ENCOUNTER UNEXPECTED PROBLEM 89 Saturday, 17 November 12
212. ENSURE CODE INTEGRITY 90 Saturday, 17 November 12
213. VERIFY THE ISSUE ELSEWHERE 91 Saturday, 17 November 12
214. BEGIN DEBUGGING... 92 Saturday, 17 November 12
215. TRACK DOWN THE CAUSE 93 Saturday, 17 November 12
216. TRACK DOWN THE CAUSE 93 Saturday, 17 November 12
217. FIX IT! 94 Saturday, 17 November 12
218. FIX IT! 94 Saturday, 17 November 12
219. ENSURE IT ACTUALLY WORKS 95 Saturday, 17 November 12
220. ENSURE IT ACTUALLY WORKS 95 Saturday, 17 November 12
221. ENSURE IT DIDN’T BREAK ANYTHING 96 Saturday, 17 November 12
222. PULL REQUEST 97 Saturday, 17 November 12
223. EMBRACE RUBY We are a fortunate bunch. 98 Saturday, 17 November 12
224. 99 Saturday, 17 November 12
225. This portion of the slide is intentionally left blank. One function?! 100 Saturday, 17 November 12
226. THANK YOU! :-) 101 Saturday, 17 November 12