A technique to implement DSL in Ruby

https://techfeed.io/events/techfeed-conference-2022

Transcript

1. 0,63".BTBGVNJ
   %4-Λ࡞Δͱ͖ʹศརͳςΫχ
   οΫ!3VCZ
   3VCZͷ্ڃςΫχοΫ
   
   

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2. ஫ҙɿૣޱͰ͢ɻ
   εϥΠυ͸ޙͰ্͛·͢ɻ
   ͝ҙݟ͝ײ૝͸νϟοτ͔5XJUUFSͰɻ
   
   

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3. ࣗݾ঺հ
   !PLVSBNBTBGVNJ
   w ໊લɿେ૔խ࢙
   w ॴଐɿϑϦʔϥϯε
   w ׆ಈɿ,BJHJPO3BJMTͱ͍͏ΧϯϑΝϨϯεͷνʔϑΦʔΨφΠβʔͳͲ
   w 044ɿ"MCBʢ+40/γϦΞϥΠβ࣮૷ʣͳͲ
   w ৄࡉ͸IUUQTUFDIGFFEJPQFPQMF!PLVSBNBTBGVNJ
   
   

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4. 3VCZͱ͍͑͹ɺ%4-
   
   

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5. 3BLF 34QFD 4JOBUSB FUD
   
   

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6. %4-Λศརʹॻ͘ํ๏Λ͝঺հ
   
   

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7. ࠓճऔΓ্͛Δͷ͸ͪ͜Β
   
   

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8. 
   

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9. 
   

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10. ࣗ࡞ͷΫϥε಺ʹϚΫϩͬΆ͘ॻ
    ͍͍ͯ͘λΠϓʢΫϥεϚΫϩʣ
    
    

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11. ࢖͍ํ
    
    

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12. 
    

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13. ಈ͖ͷ֓ཁ
    Ϣʔβʔ໨ઢ
    w Ϟδϡʔϧʢ͜͜Ͱ͸A"MCB3FTPVSDFAʣΛJODMVEF͢ΔͱΫϥε
    ϝιουʢΫϥεϚΫϩʣ͕௥Ճ͞ΕΔ
    w ௥Ճ͞ΕͨΫϥεϝιουʢ͜͜Ͱ͸ABUUSJCVUFTAͳͲʣΛݺͿ͜
    ͱͰΫϥε಺෦ʹ৘ใ͕஝ੵ͞ΕΔ
    w Πϯελϯεϝιουʢ͜͜Ͱ͸ATFSJBMJ[FAʣΛݺͿ͜ͱͰɺ஝ੵ
    ͞Εͨ৘ใͱҾ਺ͷΦϒδΣΫτʢ͜͜Ͱ͸AVTFSAʣ͔ΒಘΒΕ
    ͨ৘ใͱ߹Θͤͯ໨తͷ+40/Λऔಘ͢Δ
    
    

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14. ಺෦ͷಈ࡞
    ࣮ࡍͷίʔυ͸ޙͰڞ༗͢ΔࢀߟࢿྉΛݟͯͶ
    w Ϟδϡʔϧ͸AJODMVEFEAϑοΫΛఆٛ͠ɺͦͷதͰΠϯελϯεϝιο
    υͱΫϥεϝιουΛಉ࣌ʹ௥Ճ͠͞ΒʹԼهͷΫϥεΠϯελϯεม
    ਺ͷॳظ஋Λઃఆ͢Δ
    w ௥Ճ͞ΕͨΫϥεϝιουΛݺͿͱΫϥεΠϯελϯεม਺ʢ3VCZͰ͸
    Ϋϥε͸ΦϒδΣΫτͳͷͰΠϯελϯεม਺Λ࣋ͯΔʣ͕ઃఆ͞ΕΔ
    w ΫϥεͷAJOJUJBMJ[FAϝιου಺Ͱࣗ਎ͷΫϥεʹઃఆ͞Ε͍ͯΔΫϥε
    Πϯελϯεม਺ΛऔΓग़͠ɺΠϯελϯεͷΠϯελϯεม਺ʹઃఆ
    ͢Δ
    
    

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15. ՝୊
    
    

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16. ઃఆ͢Δ΂͖ΫϥεΠϯελϯε
    ม਺ͷ߲໨ͱॳظ஋͕ࢄΒ͹Δ
    
    

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17. ΫϥεͷܧঝΛߟ͑Δͱ͞Βʹ΍
    ΍͍͜͠
    
    

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18. ΫϥεΠϯελϯεม਺͕ؔΘΔՕॴ
    w "MCB3FTPVSDF͕JODMVEF͞Εͨͱ͖ʹݩΫϥεʹΫϥεΠϯελ
    ϯεม਺Λॳظ஋ͱͱ΋ʹઃఆ
    w "MCB3FTPVSDFΛJODMVEFͨ͠Ϋϥε͕ΠϯελϯεԽ͞Εͨͱ͖
    ʹΫϥεͷΫϥεΠϯελϯεม਺ΛΠϯελϯεͷΠϯελϯε
    ม਺ʹઃఆ
    w "MCB3FTPVSDFΛJODMVEFͨ͠ΫϥεΛܧঝͨ͠ͱ͖ɺ਌Ϋϥεͷ
    ΫϥεΠϯελϯεม਺ΛࢠΫϥεʹίϐʔ
    
    

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19. ղܾࡦ
    
    

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20. 
    

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21. 
    

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22. 
    

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23. ࠓ೔ͷςΫχοΫ
    ఆ਺Λ࢖͓͏ฤ
    w ࢄΒ͹ͬͨ৘ใΛू໿͢Δͷʹఆ਺Λ࢖͏
    w 3VCZͷఆ਺͸޿ൣғ͔ΒࢀরՄೳͰɺωετͨ͠ϋογϡͷΑ͏ͳ
    ෳࡶͳߏ଄Λอ࣋Ͱ͖ΔͷͰศར
    w ఆ਺ʹ֨ೲ͞Εͨॳظ஋Λઃఆ͍ͨ͠৔߹ɺADMPOFA·ͨ͸AEVQAΛ
    ࢖Θͳ͍ͱෳ਺ͷΦϒδΣΫτ͕ಉҰͷϝϞϦྖҬΛࢀরͨ͠Γมߋ
    ͨ͠Γͯ͠όάʹͳΔͷͰؾΛ͚ͭΑ͏
    w
    
    

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24. ࠓ೔ͷςΫχοΫʢʣ
    ϝλϓϩάϥϛϯάฤ
    w େྔͷΠϯελϯεม਺Λઃఆ͍ͨ͠ͱ͖͸ϧʔϓͷதͰ
    AJOTUBODF@WBSJBCMF@TFUA͢Δͱศར
    w AJODMVEFEAͱAJOIFSJUFEAϑοΫΛ૊Έ߹ΘͤΔ͜ͱͰ࢖͍উखͷ
    ྑ͍%4-ΛఏڙͰ͖Δ
    
    

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25. 3VCZͰָ͍͠%4-ϥΠϑΛʂ
    
    

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26. ࢀߟࢿྉ
    w IUUQTHJUIVCDPNPLVSBNBTBGVNJBMCB
    
    

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