$30 off During Our Annual Pro Sale. View Details »

Ruby 3 Redux

Ruby 3 Redux

Slide deck from my presentation at RubyDay 2019 in Verona, Italy.

Bozhidar Batsov

April 11, 2019
Tweet

More Decks by Bozhidar Batsov

Other Decks in Programming

Transcript

  1. View Slide

  2. Ciao!

    View Slide

  3. Божидар

    View Slide

  4. Bozhidar

    View Slide

  5. Bozhidar

    View Slide

  6. Bug
    cool

    View Slide

  7. @bbatsov

    View Slide

  8. Sofia, Bulgaria
    Sofia, Bulgaria

    View Slide

  9. View Slide

  10. View Slide

  11. bbatsov

    View Slide

  12. metaredux.com

    View Slide

  13. Ruby & Rails
    style guides

    View Slide

  14. View Slide

  15. View Slide

  16. View Slide

  17. View Slide

  18. View Slide

  19. View Slide

  20. Not on Ruby’s Core Team

    View Slide

  21. View Slide

  22. View Slide

  23. View Slide

  24. View Slide

  25. Matz
    on
    Ruby

    View Slide

  26. Language Maturity

    View Slide

  27. The Ruby Community

    View Slide

  28. Ruby is not dying

    View Slide

  29. View Slide

  30. View Slide

  31. We have to feed the
    community intellectually.
    — Matz

    View Slide

  32. We have to keep moving
    forward.
    — Matz

    View Slide

  33. Backwards Compatibility

    View Slide

  34. We’re not going to repeat the
    Python 3 mistakes!
    — Matz

    View Slide

  35. Victim of the Hype Cycle

    View Slide

  36. View Slide

  37. Rails Mania (2008)

    View Slide

  38. Ruby Today

    View Slide

  39. Ruby Today

    View Slide

  40. 2025

    View Slide

  41. Matz’s Retirement

    View Slide

  42. View Slide

  43. Ruby 4

    View Slide

  44. Ruby 4x4

    View Slide

  45. Ruby 4 is going to be 4 times
    faster than Ruby 3

    View Slide

  46. Ruby 4 is going to be 12 times
    faster than Ruby 2

    View Slide

  47. Ruby 4 is finally going to be
    fast enough!

    View Slide

  48. View Slide

  49. What about Ruby 3?

    View Slide

  50. –Matz
    “We’ll aim to release Ruby 3 for the Olympic
    Games in Tokyo in 2020.”

    View Slide

  51. Ruby 3 Goals
    •Improved programming safety
    •Faster performance
    •Better concurrency/parallelism support
    •Better tools

    View Slide

  52. Optional static typing?

    View Slide

  53. Duck inference?

    View Slide

  54. Actors?

    View Slide

  55. Stream based model?

    View Slide

  56. Ownership based model?

    View Slide

  57. Guilds?

    View Slide

  58. 3 times faster performance?

    View Slide

  59. Smaller Goals
    •Sane keyword arguments (?!!?!)
    •Pattern Matching
    •Deprecation of quirky features
    •Frozen string literals

    View Slide

  60. View Slide

  61. Ruby 3.0
    Redux

    View Slide

  62. Dictionary Definitions

    View Slide

  63. Ruby

    View Slide

  64. noun
    1. a precious stone consisting of
    corundum in colour varieties varying
    from deep crimson or purple to pale rose.
    2. a programming language optimised for
    programmer happiness

    View Slide

  65. 3

    View Slide

  66. number
    1. equivalent to the sum of one and
    two; one more than two; 3
    2. A mystical version rarely
    achieved by most software
    projects.

    View Slide

  67. Redux

    View Slide

  68. adjective
    1. brought back, revived
    Emacs era redux
    2. (usually postpositive) (esp of
    an artistic work) presented in a new way
    Apocalypse Now Redux

    View Slide

  69. View Slide

  70. Ruby 3.0 is not
    a single
    magic release

    View Slide

  71. Ruby 3.0 is an idea

    View Slide

  72. View Slide

  73. Ruby follows SemVer

    View Slide

  74. Ruby 3 is going to be 3 times
    faster than Ruby 2.0

    View Slide

  75. Generational GC
    (Ruby 2.1)

    View Slide

  76. Incremental GC
    (Ruby 2.2)

    View Slide

  77. MJIT
    (Ruby 2.6)

    View Slide

  78. Deprecation of flip-flops
    (Ruby 2.6)

    View Slide

  79. Ruby 2.7

    View Slide

  80. Numbered block parameters

    View Slide

  81. numbers.map { Math.log2(@1) }

    View Slide

  82. foo.bar { @1 + @2 }

    View Slide

  83. h = Hash.new { @1[@2] = "Go Fish: #{@2}" }

    View Slide

  84. h = Hash.new { @1[@2] = "Go Fish: #{@2}" }

    View Slide

  85. View Slide

  86. https://bugs.ruby-lang.org/issues/15723

    View Slide

  87. Method reference operator

    View Slide

  88. [2, 4, 8, 16, 32].map { |n| Math.log2(n) }

    View Slide

  89. [2, 4, 8, 16, 32].map(&method(Math.log2))

    View Slide

  90. [2, 4, 8, 16, 32].map(&Math.:log2)

    View Slide

  91. [2, 4, 8, 16, 32].map { Math.log2($1) }

    View Slide

  92. Beginless range

    View Slide

  93. Beginless range

    View Slide

  94. Beginningless range

    View Slide

  95. arr[..3]

    View Slide

  96. items.where(price: ..20)

    View Slide

  97. View Slide

  98. Ruby 3.0
    (Current Status)

    View Slide

  99. Better Tools

    View Slide

  100. RubyGems 3

    View Slide

  101. The bundling of Bundler
    (Ruby 2.6)

    View Slide

  102. Gemifying the Standard Library
    (ongoing progress)

    View Slide

  103. Default vs Bundled Gems

    View Slide

  104. Default Gems
    • Bundler
    • RubyGems
    • date
    • irb
    • json
    • …

    View Slide

  105. Bundled Gems
    • minitest
    • did_you_mean
    • rake
    • …

    View Slide

  106. stdgems.org

    View Slide

  107. Ruby 3x3

    View Slide

  108. Only applies to certain
    benchmarks

    View Slide

  109. Ruby 2.6
    is 65% faster than
    Ruby 2.0

    View Slide

  110. View Slide

  111. 10% average speedup per
    release

    View Slide

  112. View Slide

  113. MJIT is the biggest hope for
    Ruby 3x3

    View Slide

  114. Guilds

    View Slide

  115. View Slide

  116. View Slide

  117. Developed outside the Ruby’s
    main repo

    View Slide

  118. https://github.com/ko1/ruby/tree/guild

    View Slide

  119. Work in progress ™

    View Slide

  120. Parallel Programming in Ruby 3 with
    Guilds
    (http://www.atdot.net/~ko1/activities/2018_rubyconf2018.pdf)

    View Slide

  121. Sane Keyword Arguments

    View Slide

  122. https://bugs.ruby-lang.org/issues/14183

    View Slide

  123. # The following calls pass keyword arguments
    foo(..., key: val)
    foo(..., **hsh)
    foo(..., key: val, **hsh)

    View Slide

  124. # The following calls pass **normal** arguments
    foo(..., {key: val})
    foo(..., hsh)
    foo(..., {key: val, **hsh})

    View Slide

  125. Breaking change!!!

    View Slide

  126. Migration warning in
    Ruby 2.7

    View Slide

  127. Pattern Matching
    (https://bugs.ruby-lang.org/issues/14912)

    View Slide

  128. What’s not in Ruby 3.0?

    View Slide

  129. Optional Static Typing

    View Slide

  130. Actors

    View Slide

  131. Stream processing

    View Slide

  132. Frozen string literals

    View Slide

  133. Deprecation of autoload

    View Slide

  134. Community Impact

    View Slide

  135. Community Contributed Features
    • UTF-8
    • Enumerator
    • Generational GC
    • Keyword Arguments
    • JIT
    • Concurrency

    View Slide

  136. Community Contributions
    • Rake
    • Bundler
    • Documentation & Tutorials
    • A ton of amazing libraries
    • Rails
    • …

    View Slide

  137. View Slide

  138. Real Namespaces
    (https://bugs.ruby-lang.org/issues/14982)

    View Slide

  139. RubyKaigi Updates

    View Slide

  140. View Slide

  141. Felina

    View Slide

  142. Grazie!
    twitter: @bbatsov
    github: @bbatsov
    https://metaredux.com
    https://emacsredux.com
    RubyDay 2019
    Verona,
    Italy
    11.04.2019

    View Slide