A technique to implement DSL in Ruby

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

Transcript

1. 0,63"
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4. 3VCZͱ͍͑͹ɺ%4- 
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6. %4-Λศརʹॻ͘ํ๏Λ͝঺հ 
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10. ࣗ࡞ͷΫϥε಺ʹϚΫϩͬΆ͘ॻ ͍͍ͯ͘λΠϓʢΫϥεϚΫϩʣ 
11. ࢖͍ํ 
12. 
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 
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 
15. ՝୊ 
16. ઃఆ͢Δ΂͖ΫϥεΠϯελϯε ม਺ͷ߲໨ͱॳظ஋͕ࢄΒ͹Δ 
17. ΫϥεͷܧঝΛߟ͑Δͱ͞Βʹ΍ ΍͍͜͠ 
18. ΫϥεΠϯελϯεม਺͕ؔΘΔՕॴ w "MCB3FTPVSDF͕JODMVEF͞Εͨͱ͖ʹݩΫϥεʹΫϥεΠϯελ ϯεม਺Λॳظ஋ͱͱ΋ʹઃఆ
    w "MCB3FTPVSDFΛJODMVEFͨ͠Ϋϥε͕ΠϯελϯεԽ͞Εͨͱ͖ ʹΫϥεͷΫϥεΠϯελϯεม਺ΛΠϯελϯεͷΠϯελϯε ม਺ʹઃఆ
    w "MCB3FTPVSDFΛJODMVEFͨ͠ΫϥεΛܧঝͨ͠ͱ͖ɺ਌Ϋϥεͷ ΫϥεΠϯελϯεม਺ΛࢠΫϥεʹίϐʔ 
19. ղܾࡦ 
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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 
24. ࠓ೔ͷςΫχοΫʢʣ ϝλϓϩάϥϛϯάฤ w େྔͷΠϯελϯεม਺Λઃఆ͍ͨ͠ͱ͖͸ϧʔϓͷதͰ AJOTUBODF@WBSJBCMF@TFUA͢Δͱศར
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26. ࢀߟࢿྉ w IUUQTHJUIVCDPNPLVSBNBTBGVNJBMCB