Go for Rubyists!

It's funny to think that software development, like in the fashion world, somehow, works in cycles. Trends come and go all the time and as a result new programming languages, frameworks, services, libs are born but just a few remain relevant enough to mature and keep a community growing stronger and healthier.

Go is a open source programming language created at Google by Robert Griesemer, Rob Pike, and Ken Thompson whereas Ruby was conceived in the nighties, by Yukihiro Matsumoto. Both, Ruby and Go, are strongly growing and becoming go-to programming languages choices for developers/companies around the world.

In this talk we will compare the languages against each other and see how a Rubyists can start and become productive with Go.

Transcript

1. GO FOR RUBYISTS.
2. WHO AM I? @KLEBERVIRGILIO
3. DISCLAIMER
4. AGENDA ▸ Go’s Purpose ▸ Go’s tooling ▸ Comparing Ruby to Go idioms (solving a real world problem) ▸ Conclusion (WARNING: It may contain biased opinions ¯\_(ツ)_/¯)
5. SOME FACTS 2007 2009 2012
6. SOME FACTS
7. SOME FACTS The 15 most popular languages on GitHub
8. SOME FACTS Stack Overflow’s 2017 Developer Survey
9. SOME FACTS Stack Overflow’s 2017 Developer Survey
10. SOME FACTS
11. WHY WAS GO CREATED?
12. Go at Google: Language Design in the Service of Software Engineering https://talks.golang.org/2012/splash.article
13. WHY WAS GO CREATED? SLOW BUILDS
14. WHY WAS GO CREATED? UNCONTROLLED DEPENDENCIES
15. WHY WAS GO CREATED? UNCONTROLLED DEPENDENCIES 5MB
16. WHY WAS GO CREATED? UNCONTROLLED DEPENDENCIES 5MB + DEPS
17. WHY WAS GO CREATED? UNCONTROLLED DEPENDENCIES 5MB + DEPS = 8GB
18. WHY WAS GO CREATED? CODE HARD TO READ AND POORLY DOCUMENTED
19. WHY WAS GO CREATED? CODE HARD TO READ AND POORLY DOCUMENTED EXPENSIVE UPDATES
20. WHY WAS GO CREATED? MODERN FEATURES
21. WHY WAS GO CREATED? CROSS PLATFORMS BUILDS AND PARALLEL COMPUTATION
22. WHY WAS GO CREATED? HMM… AREN’T THESE COMMON PROBLEMS THAT LANGUAGES WE HAVE TODAY SOLVE?
23. The computing landscape today is almost unrelated to the environment in which the languages being used, mostly C++, Java, and Python, had been created. The problems introduced by multicore processors, networked systems, massive computation clusters… weren’t addressed. Rob Pike Go at Google: Language Design in the Service of Software Engineering
24. MINDS BEHIND GO
25. http://cse360fall13.wikispaces.asu.edu/Google+Go (From left to right) Robert Griesemer, Rob Pike and Ken Thompson
26. http://cse360fall13.wikispaces.asu.edu/Google+Go UTF-8 B
28. HOW TO WRITE GO CODE - WORKSPACE $GOPATH
29. HOW TO WRITE GO CODE $GOPATH/
30. HOW TO WRITE GO CODE - HELLO WORLD
31. HOW TO WRITE GO CODE go install $GOPATH/bin/hello
32. HOW TO WRITE GO CODE - 25 KEYWORDS
33. https://github.com/ruby/ruby/blob/trunk/defs/keywords#L11-L51 |wc -l == 41 cat
35. RUBY VS GO RUBY GO rbenv, rvm, … travis-ci/gimme gem install bundler go get -u github.com/golang/dep bundle init Gemfile.lock/Gemfile dep init Gopkg.lock/Gopkg.toml bundle install dep ensure
36. RUBY VS GO RUBY GO rbenv, rvm, … travis-ci/gimme gem install bundler go get -u githu../dep bundle init Gemfile.lock/Gemfile dep init Gopkg.lock/Gopkg.toml bundle install dep ensure
37. RUBY VS GO RUBY GO rbenv, rvm, … travis-ci/gimme gem install bundler go get -u github.com/golang/dep bundle init Gemfile.lock/Gemfile dep init Gopkg.lock/Gopkg.toml bundle install dep ensure
38. RUBY VS GO RUBY GO rbenv, rvm, … travis-ci/gimme gem install bundler go get -u github.com/golang/dep bundle init Gemfile.lock/Gemfile dep init Gopkg.lock/Gopkg.toml bundle install dep ensure
40. PACKAGES
41. HOW TO WRITE GO CODE
42. TYPES
43. HOW TO WRITE GO CODE
44. VARIABLES
45. HOW TO WRITE GO CODE
46. CLASS
47. HOW TO WRITE GO CODE
48. HOW TO WRITE GO CODE
49. HOW TO WRITE GO CODE
50. HOW TO WRITE GO CODE
51. HOW TO WRITE GO CODE
52. METHODS VS FUNCTIONS
53. HOW TO WRITE GO CODE
54. HOW TO WRITE GO CODE
55. INTERFACES
56. HOW TO WRITE GO CODE
57. FOR - IF
58. HOW TO WRITE GO CODE
59. HOW TO WRITE GO CODE
60. EXCEPTIONS
61. HOW TO WRITE GO CODE
62. HOW TO WRITE GO CODE
63. HEALTH-CHECK ENDPOINT REAL WORLD
64. WEB-APPLICATION
65. REAL WORLD
66. REAL WORLD
67. REAL WORLD http://bit.ly/rubyconfbr-2017-klebervirgilio-ruby http://bit.ly/rubyconfbr-2017-klebervirgilio-go
68. REAL WORLD
69. REAL WORLD
70. REAL WORLD
71. REAL WORLD
72. REAL WORLD
73. REAL WORLD
74. REAL WORLD
75. REAL WORLD
76. REAL WORLD
77. REAL WORLD
78. REAL WORLD
79. REAL WORLD
80. REAL WORLD
81. REAL WORLD
82. REAL WORLD
83. REAL WORLD
84. REAL WORLD
85. REAL WORLD
86. REAL WORLD
87. REAL WORLD
88. REAL WORLD
89. REAL WORLD
90. REAL WORLD
91. REAL WORLD
92. CONCLUSIONS ▸ Learning Go is not about decorating syntax but is about approaching problem with a different mindset. ▸ Go was created to solve Googles problems. If you have problems like Google has, go for it ▸ Even though concurrency in Go is simple, It should be used carefully. ▸ It’s quite verbose ¯\_(ツ)_/¯
93. RESOURCES ▸ https://golang.org/doc/effective_go.html ▸ https://golang.org/doc/faq ▸ https://gobyexample.com/ ▸ https://play.golang.org/ ▸ The Go Programming Language book ▸ Go at Google: Language Design in the Service of Software Engineering ▸ https://speakerdeck.com/klebervirgilio/go-for-rubyists
94. THANKS! @KLEBERVIRGILIO