@Developers Summit 2019 Fukuoka
Sample codes: https://github.com/udzura/ruby-2.7.0-samples
All About Ruby in 20192019ɺվΊͯ͢ΔRuby―RubyKaigi͔ΒݟΔRuby 3.0ͷՄೳੑPresentation by Uchio Kondo @Developers Summit 2019 Fukuoka
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Engineer @ GMO Pepabo, Inc.Uchio Kondo / @udzurahttps://blog.udzura.jp/* ɹɹɹɹɹɹɹɹ ϩʔΧϧΦʔΨφΠβʔ/ొஃऀ* CloudNative Days Fukuoka 2019 νΣΞΦʔΨφΠβʔ* ίϛϡχςΟ: Fukuoka.rb ɺ #;͘Ͷͯ͢* Duolingo Ruby Leaguer
Ruby Language
࣭Ͱ͢• ͓ࣄͰRuby͍ͬͯ·͔͢ʁ• ͓ࣄͰRails͡Όͳ͍RubyΛ͍ͬͯ·͔͢ʁ• RubyKaigi 2019 in Fukuokaɺߦ͖·͔ͨ͠ʁ
Ruby in 2019
Ruby• ͘ΘΕ͍ͯΔϓϩάϥϛϯάݴޠͰ།Ұɺຊਓ͕։ൃͨ͠ͷ• εΫϦϓτݴޠɺΦϒδΣΫτࢦɺಈతܕ͚• ࠷৽൛: 2.6.4 @ 2019-08-28• ։ൃ൛: 2.7.0-preview1 @ 2019-05-31
TryRuby!• https://ruby.github.io/TryRuby/
Ruby on Dockerhub• Docker community͕४උͨ͠RubyҎ֎ʹɺRuby core teamͷϏϧυ͍ͯ͠ΔΠϝʔδ͕ଘࡏ͢Δɻ߹ʹΑͬͯͪ͜ΒΛͬͨํ͕͍͍͔• Docker community൛: ruby:2.6.3-*• Ruby core team൛: rubylang/ruby:2.6.3-*• trunk(एऀͷ͍͏master) ؆୯ʹར༻Ͱ͖Δ
diff• ઃఆ͞Ε͍ͯΔڥม͕ҧ͏ɻDocker community ެࣜͷͷบ͕͋Δҹ... ٯʹ bionic Ҏ֎ͷbase imageDocker൛ʹ͔͠ͳ͍
RubyϦϙδτϦGitԽ• Β͘ Subversion ͕ϝΠϯϦϙδτϦ͕ͩͬͨGitʹҠߦ• GitHub ͳͲͰϛϥʔ͍͕ͨ͠ git-svn ͱͯ໘• ύονΛૹͬͯ͘ΕͨਓͷใͳͲΛ͏·͘ࡌ͍ͤͨ• https://k0kubun.hatenablog.com/entry/ruby-core-2019• https://www.hsbt.org/diary/20190423.html
git.ruby-lang.org• ެࣜͷϦϙδτϦcgitͰίϛϡχςΟ͕ϗετ͍ͯ͠Δ• ʮGitHubԽʯ͍ͯ͠ͳ͍• ͱ͍͑clone͍ͨ͠ࡍGitHubͷϛϥʔਪ• GitHubʹPRΛग़ͤөͯ͘͠ΕΔ͠ɺίϯτϦϏϡʔλʹܝࡌ͞ΕΔʢʂʂʣ• Git ͷࢄϦϙδτϦͰ͋Δͱ͜ΖͷϝϦοτhttps://git.ruby-lang.org/ruby.git/
ͪͳΈʹ• ඪ४ϥΠϒϥϦ gem Խ͕΄΅ऴΘ͍ͬͯΔ• https://stdgems.org/• GitHub ্Ͱɺ Ruby ίΞͱผͷϦϙδτϦʹͳ͍ͬͯΔ ʢRubyίΞࣗମɺgitwebʹ͋Δʣ• https://github.com/ruby/
ͪͳΈʹ• ඪ४ϥΠϒϥϦͰ͋ͬͯɺʮ࠷৽൛ʯΛΠϯετʔϧͯ͠ར༻͕Մೳ$ gem install specific_install$ gem specific_install http://github.com/ruby/irb$ gem list -d irb*** LOCAL GEMS ***irb (1.1.0.pre.2, 1.0.0)Author: Keiju ISHITSUKAHomepage: https://github.com/ruby/irbLicense: BSD-2-ClauseInstalled at (1.1.0.pre.2): /Users/udzura/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0(1.0.0, default): /Users/udzura/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0Interactive Ruby command-line tool for REPL (Read Eval Print Loop).
ruby-jp• ຊޠΛͤΔRubyistʹΑΔڊେSlack͕Ͱ͖ͨ• https://ruby-jp.github.io/ • > ruby-jp Ruby ϓϩάϥϚʔಉ࢜ͷަྲྀΛతͱͨ͠ Slack ϫʔΫεϖʔεͰ͢ɻ > ࢀՃऀͷٕज़ϨϕϧʹؔΘΒͣɺ࣭ɾ૬ஊɾใަΛؾܰʹͰ͖ΔΛࢦ͍ͯ͠·͢ɻ
Where Ruby is used• Web Application Framework: Ruby on Rails• 6.0 released @ 2019-08-15
Where Ruby is used• Logging middleware: Fluentd• A member project of Cloud Native Computing Foundation
Where Ruby is used• Infrastructure as Software:• Chef/Itamae• Vagrant• Serverspec
Where Ruby will be used?• Frontend!!!• Opal• Data Science• Red Data Tools
͓·͚: mruby• ʮΈࠐΈʯ͚ mruby• ಛ:• CRuby ͱൺόΠφϦ͕খ͔ͬͨ͞ΓলϝϞϦ ʮશ෦ೖΓʯmrubyόΠφϦ/static libΛ࡞Γ͍͢ C API͕උ͞Ε͍ͯΔ• ͨͩ͠ɺࠓCRubyͷΛத৺ʹ͠·͢...
RubyKaigi in 2019https://rubykaigi.org/2019
Venue• Ԭࠃࡍձٞ @ 2019-04-18 ~ 20
ϥϯν
࠙ձ
Talks
Topics• Keynotes:• About Ruby 3 and its future by Matz• Branch Maintainer’s Life by nagachika• Extreme optimization tech for Ruby by Jeremy• Talks:• C-level Ruby optimization / specification details• Ecosystems such as bundler, RSpec, Typings, Homebrew...• JRuby / TruffleRuby / mruby... / serverless, containers, cloudnative...
Ruby committers vs the world• Photo from: https://tech.drecom.co.jp/rubykaigi-2019-day3-report/
Ruby updates in (2.3..2.6)
Ruby 2.3.0• Frozen String Literal ϓϥάϚ• did_you_mean gem ͷόϯυϧ• ʮ&.ʯΦϖϨʔλͷಋೖɻnilͰͳΔ҆͘શʹϝιουݺͼग़͠• ύϑΥʔϚϯεͷվળʢProc#call ͷ࠷దԽͳͲʣ
Ruby 2.4.0• Fixnum/Bignumͷ౷߹• binding.irb ͱॻ͚ΔΑ͏ʹͳΔ• ύϑΥʔϚϯεվળʢHashͷ෦σʔλߏมߋͳͲʣ
Ruby 2.5.0• rescue/else/ensure Λ do/end ϒϩοΫʹॻ͚ΔΑ͏ʹ• ΧόϨοδͷڧԽʢذΧόϨοδͱϝιουΧόϨοδͷαϙʔτʣ• ύϑΥʔϚϯεͷվળʢVMͰͷtrace໋ྩͷཧɺϒϩοΫ͠ͷํࣜมߋɺERBͷվળʣ
Ruby 2.6.0• JITͷಋೖ• RubyVM::AST ͷಋೖ• ऴͳ͠Rangeͷಋೖ• ύϑΥʔϚϯεͷվળ ʢϒϩοΫݺͼग़͠ͷվળɺίϧʔνϯͷωΠςΟϒԽʣ
Six Years of Ruby Performance• From RubyKaigi 2019https://rubykaigi.org/2019/presentations/codefolio.html
What’s new in Ruby 2.7.0 !!
Caveats• ਖ਼ࣜϦϦʔεલͷόʔδϣϯͷ༷ͳͷͰมߋ͢Δ͜ͱ͕͋Γ·͢• ࣮ࡍൃදޙʹ2ՕॴมΘ͍ͬͯ·͢ʼʻ• ൃද࣌ʢ2019-08-29 17:00ʣͰͷใͱͳΓ·͢
Pattern matching• case ... in ... ͱ͍͏จ๏Λಋೖ• ෳࡶͳߏͷϚονϯάͷधཁʹԠ࣮͑ͯɻ ΨʔυઅͳͲ͋Δ• Duck TypingΛར༻ͯ͠Ϛονϯά͢ΔΫϥεΛ֦ுͰ͖Δhttp://blog.akanumahiroaki.com/entry/2019/05/02/200000
Pattern matching: demo
Numbered parameter in blockhttps://autopp-tech.hatenablog.com/entry/2019/03/19/095500
Changed! (edited after presentation)• @1, @2, @3 -> _1, _2, _3• _1, _2, _3 ͱ͍͏ϩʔΧϧม͕͋ͬͨΒܯࠂ͕ग़ΔΑ͏ʹͳΓ·͢
Beginless rangehttps://blog.saeloun.com/2019/08/19/ruby-2-7-adds-beginless-range.html
Pipeline operatorhttps://dev.to/baweaver/ruby-2-7-the-pipeline-operator-1b2d※ ͜Ε preview-1 ʹؚ·Εͣɺdev൛ͷΈͰ͢
reverted... (edited after presentation)> Maybe we would revisit the idea in the future (with different operator appearance)
.: operator
IRB improvementSyntax highlightϝιουิ࣌ʹυΩϡϝϯτ͕ग़Δ
More next generation featuresin Ruby
Typing• Current implementations:• Sorbet• ίʔυͷܕΞϊςʔγϣϯ• Steep• Gradual TypingɺܕఆٛϑΝΠϧ(.rbi)• ...
Sorbet demo:
Steep demo:
Concurrency (Guild)• Many presentations by Koichi Sasada• "Guild Prototype" in RubyKaigi “2018”https://www.slideshare.net/KoichiSasada/guild-prototype
Guild Idea• Thread/FiberΛ͞ΒʹแΉͷͱͯ͠GuildʢԾ໊ʣΛಋೖ• Guildʹॴଐ͍ͯ͠ΔΦϒδΣΫτɺଞͷGuild͔Β৮Εͳ͍• Guildಉ࢜ͰΠϛϡʔλϒϧͳΦϒδΣΫτ͚ͩΛɺνϟϯωϧͰڞ༗
Concurrency (AutoFiber)• Switch Fibers by I/O operations• ʮ໊લʯ...https://bugs.ruby-lang.org/issues/13618
Is Ruby dead??
What is being dead?• ୭Θͳ͘ͳͬͨΒʁ• ։ൃ͕ఀࢭͨ͠Βʁ/׆ൃͰͳ͘ͳͬͨΒʁ• ʹͳΒͳ͘ͳͬͨΒʁ
Hype Cycleshttps://www.gartner.com/jp/research/methodologies/gartner-hype-cycle
Conclusion
The future• Ruby ࠓΞΫςΟϒʹ։ൃ͕͞Ε͍ͯΔ• Ϣʔβ͕ଟ͍ݴޠͰ͋Δʹ͔͔ΘΒͣɺະདྷͷͨΊʹେ͖ͳมߋ͕ೖ͍ͬͯΔͱ͜Ζ• ܕ҆શੑɺฒߦੑɺύλʔϯϚονͳͲͷ࠷ۙͷݴޠͷՌΛऔΓೖΕΑ͏ͱ͍ͯ͠Δ• ͏·͍͚͘ɺΑΓݱతͳݴޠͱͯ͠࠶͕ू·Δ͔
มԽΛָ͠͏Enjoy Programming, Enjoy Changes
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