The Road to Ruby Mastery (RailsClub Moscow 2017)

Slide-deck from my presentation at RailsClub Moscow 2017.

Transcript

2. Божидар
3. I’m back
21. Большое спасибо!
22. Большое спасибо!
23. Sofia, Bulgaria
24. Sofia, Bulgaria
26. I’m an Emacs fanatic
27. bbatsov
30. They call me Master…
31. … and I’m a Rubyist
32. I must be The Master Rubyist!
34. This guy is so deep and profound!
35. The Road to Ruby Mastery by Bozhidar Batsov
36. Master
37. having or showing very great skill or proficiency
39. Novice
40. a person new to and inexperienced in a job or situation
42. Journeyman
43. a worker, performer, or athlete who is experienced and good but not excellent
45. Dreyfus Model of Skill Acquisition
46. Novice Advanced Beginner Competent Proficient Expert
47. The Road to Mastery
49. not really
50. try 10 years
51. http://norvig.com/21- days.html Teach Yourself Programming in Ten Years Peter Norvig
52. Apprenticeship
53. Novice Journeyman Master Apprenticeship Apprenticeship
54. learning from others
55. directly
56. indirectly
57. Computer Science Fundamentals
69. Object-oriented programming
71. Ruby is a purely object- oriented language
74. Know Thy Language!
75. Crazy People
77. Ruby is a VERY COMPLEX language!
78. class instance variable
79. protected
80. module_function vs extend self
81. refinements
82. super vs super()
83. == === equal? eql?
86. Grokking the language
87. Understanding and appreciating its philosophy
88. Coming to grips with reality
89. (no language is perfect)
90. (not even Clojure)
91. (some languages really suck)
92. Master the idioms
93. for i in 1..3 puts "Hello, Moscow!” end
94. 3.times do puts "Hello, Moscow!” end
95. if some_condition then # body omitted end
96. def some_method # ... return result end
100. Read some (good) code
101. some == A LOT
103. Obtain a notion of style
106. Ruby Style Guide
108. Tackle problems with style
110. puts debugging sucks
111. bla bla bla puts ‘********’ puts x puts ‘********’
113. pro “puts” debugging techniques
114. object = Object.new puts object.method(:blank?).source_location # => ["/gems/activesupport-5.0.0.beta1/ lib/active_support/core_ext/object/ blank.rb", 14]
115. class Bar def foo puts "=====================" puts caller end end
116. def foo puts method(:foo).super_method.source_location super end
117. def parse(input, skip_code_comments: false, ignore_whitespace: true) # do stuff end method(:parse).parameters #=> [[:req, :input], [:key, :skip_code_comments], [:key, :ignore_whitespace]]
118. config.thing = { "foo" => "bar" } config.thing.freeze = { "foo" => "bar" } config.thing.delete("foo") # active_support/concurrency/share_lock.rb:151:in `delete': can't modify frozen Hash (RuntimeError) # from active_support/concurrency/share_lock.rb:151:in `yield_shares' # from active_support/concurrency/share_lock.rb:79:in `block in stop_exclusive'
119. Ruby Debugging Magic Cheat Sheet http://www.schneems.com/2016/01/25/ruby-debugging-magic-cheat- sheet.html
120. I am a puts debugger https://tenderlovemaking.com/2016/02/05/i-am-a-puts-debuggerer.html
121. I am not a puts debugger!
122. byebug https://github.com/deivid-rodriguez/byebug
123. pry-byebug https://github.com/deivid-rodriguez/pry-byebug
124. Profiling stuff
125. ruby-prof https://github.com/ruby-prof/ruby-prof
126. memory_profiler https://github.com/SamSaffron/memory_profiler
128. Beyond Rails
129. Opal
130. RubyMotion
131. System administration
132. JRuby
133. Alternative web frameworks
134. Hanami
135. Padrino
136. Sinatra
137. Roda
138. Keep in sync
139. RubyWeekly
140. Ruby5
141. RubyRogues
142. RubyTapas
143. GoRails
144. RailsClub
145. RubyConf
146. RailsConf
147. Always be exploring!
148. Clojure
149. Haskell
150. Elm
151. Erlang/Elixir
152. Racket
153. Ideas from other programming languages make us better programmers
154. One more thing…
155. Ruby is simply not a good fit for every possible problem
158. ФЕЛИНА
159. Епилог twitter: @bbatsov github: @bbatsov http//batsov.com http://emacsredux.com RailsClub Moscow, Russia 23.09.2017