Programming Language Crystal

#w8lt 第四回 (2015-07-29) の発表資料です
http://w8lt.connpass.com/event/16856/

Transcript

1. Programming Language
   Crystal
   2015-07-29
   
   W8LT#4
   
   @dtan4
   IUUQTqJDLSQLZ[T
   

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2. 
   TF[FNJ

   ͪͦ͝͏͞·Ͱ͢
   

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3. ಙాݚ.
   

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4. IUUQTDSZTUBMTI
   

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5. IUUQTDSZTUBMTI
   

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6. IUUQDSZTUBMMBOHPSH
   

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7. Crystal
   • Ruby ͬΆ͍γϯλοΫε
   
   • ੩తܕνΣοΫ
   
   • Crystal ͷίʔυ಺Ͱ C ॻ͚Δ
   
   • ωΠςΟϒίʔυੜ੒
   
   • Crystal -> LLVM IR -> ωΠςΟϒ
   http://crystal-lang.org/
   https://github.com/manastech/crystal
   

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8. • ίϯύΠϥ͕ Crystal Ͱ࣮૷͞ΕͯΔ (!)
   Crystal
   http://crystal-lang.org/
   https://github.com/manastech/crystal
   

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9. Crystal
   • Initial commit ͸ 2012-09-04
   
   • v0.1.0 ͸ 2014-06-19
   
   • ݱࡏ͸ v0.7.4 (2015-06-24)
   http://crystal-lang.org/
   https://github.com/manastech/crystal
   

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10. Crystal
    • Πϯετʔϧ (Mac OS X):
    
    • Try it online:
    http://play.crystal-lang.org/
    $ brew tap manastech/crystal
    $ brew update
    $ brew install crystal-lang
    

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11. Crystal
    • Πϯετʔϧ (Mac OS X):
    
    • Try it online:
    http://play.crystal-lang.org/
    $ brew tap manastech/crystal
    $ brew update
    $ brew install crystal-lang
    CSFXOQNͰDSZTUBMೖΕͯΔͱ

    1"5)ʹΑͬͯ͸Ϳ͔ͭΔ Ϳ͔ͭͬͨ
    
    DSZTUBM͸

    ·͕͍ͪ
    

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12. Crystal
    • εΫϦϓτ࣮ߦ
    
    • όΠφϦϏϧυ & ࣮ߦ:
    
    • ࠷దԽϏϧυ & ࣮ߦ
    $ crystal [run] hoge.cr
    $ crystal build hoge.cr
    $ ./hoge
    $ crystal build hoge.cr --release
    $ ./hoge
    

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13. Ruby ͱͷҧ͍
    • Ҿ਺ʹܕࢦఆͰ͖Δ def hoge(n : Int)
    • γϯάϧΫΥʔτͩΊ
    
    • Bool ஋͸ Bool ϦςϥϧɺΫϥε͡Όͳ͍
    
    • RubyGems తͳύοέʔδγεςϜແ͍
    
    • (crystal#220)
    
    • ࣗલͷґଘ؅ཧγεςϜ͕͋Δ $ crystal deps
    
    • ඪ४ϥΠϒϥϦʹ͍Ζ͍ΖἧͬͯΔ
    
    • ͳͲͳͲ
    $VSTFT )551 .BSLEPXO 0"VUI 4QFDʜ
    

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14. ϕϯνϚʔΫ
    

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15. ஛಺ؔ਺
    #!/usr/bin/env crystal
    def tarai(x, y, z)
    return y if x <= y
    tarai(tarai(x - 1, y, z), tarai(y - 1, z, x), tarai(z - 1, x, y))
    end
    puts tarai(13, 10, 0)
    #!/usr/bin/env ruby
    def tarai(x, y, z)
    return y if x <= y
    tarai(tarai(x - 1, y, z), tarai(y - 1, z, x), tarai(z - 1, x, y))
    end
    puts tarai(13, 10, 0)
    

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16. ஛಺ؔ਺
    #!/usr/bin/env crystal
    def tarai(x, y, z)
    return y if x <= y
    tarai(tarai(x - 1, y, z), tarai(y - 1, z, x), tarai(z - 1, x, y))
    end
    puts tarai(13, 10, 0)
    #!/usr/bin/env ruby
    def tarai(x, y, z)
    return y if x <= y
    tarai(tarai(x - 1, y, z), tarai(y - 1, z, x), tarai(z - 1, x, y))
    end
    puts tarai(13, 10, 0)
    ιʔείʔυ͸
    શ͘ಉ͡
    ճ
    UBSBJݺͼग़͠
    

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17. ஛಺ؔ਺
    3VCZ
    $SZTUBM
    ͦͷ··
    $SZTUBM
    Ϗϧυࡁ
    $SZTUBM
    ࠷దԽࡁ
    UBSBJ
    T T T T
    

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18. ஛಺ؔ਺
    3VCZ
    $SZTUBM
    ͦͷ··
    $SZTUBM
    Ϗϧυࡁ
    $SZTUBM
    ࠷దԽࡁ
    UBSBJ
    T T T T
    ͦͷ··Y
    όΠφϦϏϧυY
    

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19. ؆୯ͳ HTTP αʔό
    #!/usr/bin/env crystal
    require "http/server"
    server = HTTP::Server.new(8080) do |request|
    HTTP::Response.ok "text/plain", "Hello world!"
    end
    server.listen
    #!/usr/bin/env ruby
    require "rack"
    app = Proc.new do |env|
    ["200", { "Content-Type" => "text/plain" }, ["Hello world!"]]
    end
    Rack::Handler::WEBrick.run(app, Port: 8080)
    

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20. ؆୯ͳ HTTP αʔό
    3VCZ
    $SZTUBM
    ͦͷ··
    $SZTUBM
    Ϗϧυࡁ
    $SZTUBM
    ࠷దԽࡁ
    ฒྻ
    SFRT
    

    SFRT
    

    SFRT
    

    SFRT
    
    SFRT
    $ ab -k -c 10 -n 10000 http://localhost:8080/
    

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21. ؆୯ͳ HTTP αʔό
    3VCZ
    $SZTUBM
    ͦͷ··
    $SZTUBM
    Ϗϧυࡁ
    $SZTUBM
    ࠷దԽࡁ
    ฒྻ
    SFRT
    

    SFRT
    

    SFRT
    

    SFRT
    
    SFRT
    $ ab -k -c 10 -n 10000 http://localhost:8080/
    ͦͷ··Y
    ࠷దԽϏϧυY
    

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22. WAF
    • Codcore/amethyst (ࢵਫথ)
    
    • Rails ͬΆ͍΍ͭ
    
    • druvrajvanshi/Moonshine
    
    • Sinatra ͬΆ͍΍ͭ
    

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23. ॴײ
    • ஌໊౓௿͍
    
    • άάϥϏϦςΟ௿͍
    
    • Go ͸όΠφϦు͚Δ͚Ͳจ๏͕…ͱ͍͏

    Rubyist ʹ΢έ͕ྑͦ͞͏
    
    • Ruby ք۾ͷࢿ࢈ΛҠ২͠΍ͦ͢͏
    
    • ΤίγεςϜڵོͯ͠΄͍͠
    

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