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

Listかもしれない

irof
January 30, 2023

 Listかもしれない

【オンライン】 JJUGナイトセミナー「コレクションフレームワーク特集」1/30(月) 開催
https://jjug.doorkeeper.jp/events/149811

irof

January 30, 2023
Tweet

More Decks by irof

Other Decks in Programming

Transcript

  1. -JTU͔΋͠Εͳ͍
    ++6(φΠτηϛφʔʮίϨΫγϣϯϑϨʔϜϫʔΫಛूʯ
    5

    View Slide

  2. ࠓ೔ͷ࿩
    話 気 ……

    View Slide

  3. ίϨΫγϣϯͱ͸

    View Slide

  4. ίϨΫγϣϯͱ͸
    ίϨΫγϣϯʢࡶʣ
    ίϨΫγϣϯʢͱΓ͋͑ͣʣ
    ίϨΫγϣϯʢͪΌΜͱʣ
    ͦͷଞͷίϨΫγϣϯ
    ίϨΫγϣϯͱ഑ྻ

    View Slide

  5. ίϨΫγϣϯͱ͸
    ʢࡶʣ

    View Slide

  6. ࡶͳίϨΫγϣϯ
    ཁૉΛෳ਺·ͱΊͯѻ͏΋ͷ
    ෳ਺ʹO
    ೖΕ෺ɺ͔ͨ·Γɺଋɺίϯς
    φɺू߹ɺɺɺ

    View Slide

  7. ίϨΫγϣϯͷ஥ؒ
    $PMMFDUJPOT'SBNFXPSLʢࠓճʣ
    ഑ྻ
    0QUJPOBM
    4USFBN
    ଞͷίϨΫγϣϯ

    View Slide

  8. ίϨΫγϣϯ
    ʢͱΓ͋͑ͣʣ

    View Slide

  9. ͱΓ͋͑ͣ
    -JTU
    ͍͍ͩͨ͜ΕͰࣄ଍ΓΔ
    .BQ
    ΩʔͰҰຊ௼Γ͍ͨ͠ͱ͖ʹ

    View Slide

  10. લఏΠϯλϑΣʔεͱ࣮૷Ϋϥε
    ίϨΫγϣϯ͸جຊతʹΠϯλ
    ϑΣʔεͰѻ͍·͢ɻ
    ࣮૷Ϋϥε͸Πϯελϯεੜ੒
    ࣌ͳͲಛผͳ৔߹͚ͩɻ
    ͰͱΓ͍͍͋͑ͣɻ

    View Slide

  11. -JTUͱΓ͋͑ͣ࢖͑Δ
    Πϯελϯε͕࡞ΕΔ
    ཁૉΛ௥ՃͰ͖Δ
    ϧʔϓͰ͖Δ

    View Slide

  12. -JTUͱΓ͋͑ͣ࢖͑Δ
    List完全

    View Slide

  13. ׬શʹϚελʔͨ͠
    ʮͱΓ͋͑ͣ࢖͑Δʯ͸͜ΕΛ
    ͪΌΜͱͰ͖Ε͹͍͍ɻ
    ͱΓ͋͑ͣ"SSBZ-JTU
    ͱΓ͋͑ͣδΣωϦΫεॻ͍ͱ͘
    BEE
    GPSFBDIϧʔϓ

    View Slide

  14. ͪΌΜͱ࢖͑ͯͳ͍ྫ

    View Slide

  15. .BQͱΓ͋͑ͣ࢖͑Δ
    Πϯελϯε͕࡞ΕΔ
    ཁૉΛ௥ՃͰ͖Δ
    ཁૉΛऔΓग़ͤΔ

    View Slide

  16. .BQͱΓ͋͑ͣ࢖͑Δ

    View Slide

  17. ׬શʹϚελʔͨ͠
    ʮͱΓ͋͑ͣ࢖͑Δʯ͸͜ΕΛ
    ͪΌΜͱͰ͖Ε͹͍͍ɻ
    )BTI.BQ
    LFZ͸)BTI.BQͰѻ͑Δ΋ͷ
    ͱΓ͋͑ͣ4USJOHͰ͍͍ɻ͋ͱͰΘ͔Δ

    View Slide

  18. ͱΓ͋͑ͣίϨΫγϣϯ࢖͑Δ
    ͬͯݴ͍͍ͬͯɻ
    ͜ΕͰۀ຿ॲཧ͸ॻ͚ͳ͘͸ͳ͍ɻ
    Α͘Θ͔ΒΜͷग़͖ͯͨΒʮͱΓ͋
    ͑ͣʯͷ࣍ʹਐΈ·͠ΐ͏ɻ
    ͍͖ͳΓίϨΫγϣϯશΫϥεͱ͔શϝ
    ιουͷ࢖͍ํͱ͔֮͑ͳ͍͍ͯ͘Αɺ΄
    Μͱʹɻ

    View Slide

  19. ͱΓ͋͑ͣʹ෇͚ম͖ਕ
    ଘࡏνΣοΫDPOUBJOT
    ࡟আSFNPWF
    ͜Ε͘Β͍ͰʮͰ͖ͳ͍ॲཧʯ͸ͦ͏
    ͳ͍ͱࢥ͏
    ޮ཰ѱ͍ͱ͔อकੑѱ͍ͱ͔μα͍ͱ
    ͔͸͋Δ͚Ͳɺͦ͜Ε͸࢓ํͳ͍

    View Slide

  20. ίϨΫγϣϯ
    ʢͪΌΜͱʣ
    Java SE 話

    View Slide

  21. $PMMFDUJPOT'SBNFXPSL
    ίϨΫγϣϯͷϑϨʔϜϫʔΫ
    +BWBͰಋೖ͞Εͨ΋ͷ
    ʢ೥લʣ
    ʜʜಋೖͩͱࢥͬͯͨΑɻϓϩ
    δΣΫτ΍ͬͯͨ࣌7FDUPSͱ͔ग़͖ͯ
    ͔ͨΒɻ

    View Slide

  22. $PMMFDUJPOT'SBNFXPSL
    ΠϯλϑΣʔεͱ࣮૷Λ෼͚Δ
    ͷ͕ྲྀߦ͍ͬͯͨ࣌୅
    ࠓ΋࢖͑ͯΔͷ͜Εͷ͓͔͛ײ΋͋Δ
    ϚγϯεϖοΫ͕ශऑͳ࣌୅
    Α͘Ͱ͖ͯΔʢਖ਼௚ʣ

    View Slide

  23. $PMMFDUJPOT'SBNFXPSLͷ
    ΠϯλϑΣʔεͨͪ

    View Slide

  24. ΫϥεೖΕΔͱΧΦεʹͳΔ

    View Slide

  25. ͬ͠ͱ͚૚
    ૚ -JTU .BQ

    $PNQBSBCMF
    $PNQBSBUPS
    ૚ 4FU 4PSUFE4FU 4PSUFE.BQ
    ൪֎ $PMMFDUJPO ΄͔
    各層 中 話

    View Slide

  26. ίϨΫγϣϯͪΌΜͱ࢖͑Δ
    ͬͯͳΜΑʁͱͳΓ·͢ɻ
    ͳͷͰͪΌΜͱΛϨϕϧʹ෼͚
    ͯΈΔɻ

    View Slide

  27. ͪΌΜͱ
    ΠϯλϑΣʔεΛબ୒Ͱ͖Δ
    ࣮૷Λબ୒Ͱ͖Δ
    ඇίϨΫγϣϯͱม׵Ͱ͖Δ
    ʢ͜·͝·ͨ͠஌ࣝκʔϯʣ
    ίϨΫγϣϯΛ࣮૷Ͱ͖Δ
    #FUUFSίϨΫγϣϯΛ࡞ΕΔ
    =====超 壁=====

    View Slide

  28. ଞͷίϨΫγϣϯ

    View Slide

  29. ଞͷίϨΫγϣϯʁ
    $PMMFDUJPOT'SBNFXPSLҎ֎ʹ΋ί
    ϨΫγϣϯ͸ଘࡏ͠·͢ɻ
    ෺଍Γͳ͍ྖҬͰ͸ಠࣗͷίϨΫ
    γϣϯ͕࢖ΘΕΔ͜ͱ΋͋Γ·͢ɻ
    นΛඈͼӽ͑ͨਓ͕ͨͪ΍ͬͯ·
    ͢ɻ

    View Slide

  30. ίϨΫγϣϯ
    $PMMFDUJPOT'SBNFXPSL͸+BWB
    4&Ͱఏڙ͞Ε·͕͢ɺݴޠతʹ
    ಛผѻ͍͞Ε͍ͯΔͷ͸*UFSBCMF
    ͘Β͍Ͱ͢ɻ

    View Slide

  31. *UFSBCMFͷಛผѻ͍

    View Slide

  32. ͱ͸͍͑GPSFBDIϧʔϓ
    ࠷ۙʢ+BWB͸೥݄ɺͭ·
    Γ೥લʜʜʣ͸GPS&BDIϝιο
    υ͕ੜ͑ͯ-BNCEB౉ͤΔΑ͏ʹ
    ͳͬͨΓͯ͠ΔͷͰɺGPSFBDI
    ϧʔϓ͸ͦ͜·Ͱར఺Ͱ΋ͳ͍
    Ͱ͢ɻ

    View Slide

  33. ଞͷίϨΫγϣϯ̎छྨ
    ίϨΫγϣϯͷΠϯλϑΣʔε΍
    Ұ෦ΫϥεΛ࢖ͬͯɺΑΓ໨తʹ
    ߹ͬͨίϨΫγϣϯ࣮૷
    ΠϯλϑΣʔε͔Βؙ͝ͱ࠶ઃܭ
    ͞Εͨ$PMMFDUJPOT'SBNFXPSLͱ
    ޓ׵ੑͷͳ͍#FUUFSίϨΫγϣϯ

    View Slide

  34. ίϨΫγϣϯ࣮૷
    +BWBඪ४ϥΠϒϥϦʹ΋ࢄݟ͞ΕΔɻ
    γʔϜϨεʹ୅ସͰ͖ɺ໨తʹ߹͍ͬͯͨ
    ΒྗΛൃش͢Δɻ
    ΠϯλϑΣʔε͑͞߹ͬͯΕ͹͍͍ͷͰɺ
    3%#ʹ௚઀઀ଓ͢ΔίϨΫγϣϯͱ͔΋࡞
    ΕΔɻ
    ࢖͍෺ʹͳΔ͔͸஌ΒΜɻ

    View Slide

  35. #FUUFSίϨΫγϣϯ
    $PMMFDUJPOT'SBNFXPSLͷܕ֊૚΍ૢ࡞
    ʹҟΛএ͑Δಠࣗ࿏ઢɻ
    ੑೳ΍"1*ͷ࢖͍উख͸༏Δ΋ͷͷɺඪ
    ४ͱ֎ΕΔ͕Ώ͑ʹଞͷϥΠϒϥϦͱ
    ͷ΍ΓͱΓͷ෦෼Ͱଟগటष͘ͳΔɻ
    Ͱ΋ศརͰ҆શͰޮ཰͍͍ɻ

    View Slide

  36. ίϨΫγϣϯͷૢ࡞

    View Slide

  37. ΍Γ͍ͨૢ࡞
    ௥Ճ
    ࡟আ
    ஔ׵
    நग़
    ෼ׂ
    ूܭ
    ೚ҙͷॲཧ
    ม׵
    ଞ΋͋Δ͔΋

    View Slide

  38. ίϨΫγϣϯૢ࡞
    ҰݸͣͭऔΓग़ͯ͠΍Ε͹ͱΓ͋
    ͑ͣͳΜͱ͔ͳΔ
    ੑೳ͕ڐͤ͹ɻ
    ࣮૷ྔ͕ڐͤ͹ɻ
    ίʔυ͕ଟ͍ͱ୯७ʹ໘౗ͩ͠ɺ
    ίʔυ͕ଟ͍෼͚ͩόάΓ΍͍͢ɻ

    View Slide

  39. ࣍Ͱ😉

    View Slide

  40. ίϨΫγϣϯΘ͔Δ

    View Slide

  41. Θ͔Δ͍Ζ͍Ζ
    Ϋϥε΍ϝιουΛ҉ه͍ͯ͠
    ͯ΋Θ͔Δͱ͸͍͑·ͤΜɻ

    View Slide

  42. $PMMFDUJPOT'SBNFXPSLͷ
    ΠϯλϑΣʔεͨͪ

    再掲

    View Slide

  43. ΫϥεೖΕΔͱΧΦεʹͳΔ

    再掲

    View Slide

  44. KBWBVUJM͚ͩݟͯ΋
    List実装
    Map実装

    View Slide

  45. Θ͔Δ͍Ζ͍Ζ
    ͦ΋ͦ΋֮͑ΔͷແཧΑͶ

    View Slide

  46. ͳͷͰ૚͝ͱʹ
    ʮ͜Ε͸Θ͔Δʯͱݴ͑ͦ͏ͳ࿩Λ͠·͢

    View Slide

  47. -JTU
    ॱংͷ͋ΔίϨΫγϣϯͰ͢ɻ
    ॱং͕͋ΔͷͰ
    ೖΕͨॱ͕ҡ࣋͞ΕΔ
    ฒͼସ͕͑Ͱ͖Δ
    ฒͼॱΛѻ͑Δඞཁ͕͋Δ

    View Slide

  48. -JTUͷมߋՄೳੑ
    -JTUPG΍"SSBZTBT-JTUͰ࡞ͬͨΓɺ
    $PMMFDUJPOTVONPEJ
    fi
    BCMF-JTUΛ௨ͨ͠-JTU͸มߋͰ
    ͖ͳ͍ɻ
    มߋͰ͖ͳ͍-JTUʹมߋૢ࡞Λߦ͏ͱ
    6OTVQQPSUFE0QFSBUJPO&YDFQUJPO͕ൃੜ͢Δɻ࣮ߦ࣌ྫ֎ͭ
    Β͍ɻ
    -JTUʹݶΒͳ͍͚ΕͲίϨΫγϣϯશൠ๊͕͑Δɺ
    ݹ͔͘ΒΑ͘஌ΒΕͨڍಈɻ
    มߋෆՄΛલఏʹ͢Δͷ͕ྑ͍ɻ

    View Slide

  49. -JTUͷ࣮૷બ୒
    KBWBVUJM"SSBZ-JTU
    -JTUPG &

    ੜ੒͢Δͱ͖͸͜ͷ̎୒ɻ
    ଞ΋͋Δ͚Ͳ͋·Γؾʹ͠ͳ͍͍ͯ͘
    Ͱ͢ɻ

    View Slide

  50. "SSBZ-JTUͱ-JOLFE-JTU
    ΄ͱΜͲ"SSBZ-JTUͰ͍͍
    -JOLFE-JTUͷํ͕ద੾Ά͍৔໘Ͱ
    ΋"SSBZ-JTUͷํ͕ੑೳͰͨΓ͠
    ͯ͠·͏͜ͱ΋͠͹͠͹
    "SSBZ-JTU͕࢖͍౗͞Εͨ݁Ռͱ͔ͳ
    Μͱ͔

    View Slide

  51. .BQ
    ΩʔͰѻ͏࣌ʹ࢖͍·͢ɻ
    Ωʔ͸ಉ஋ੑʢFRVBMTIBTI$PEFʣ͕ద
    ੾ʹ࣮૷͞Ε͍ͯΔඞཁ͕͋Γ·͢ɻ
    FRVBMTIBTI$PEF͸.BQͷͨΊʹ͋Δͱ
    ݴͬͯ΋աݴͰ͸ͳ͍ɻ
    աݴͩͬͨɻͰ΋ίϨΫγϣϯͷͨΊʹ͋Δͱ
    ݴͬͯ΋աݴͰ͸ͳ͍ؾ͸͠ͳ͍Ͱ΋ͳ͍ɻ

    View Slide

  52. .BQͷ૸ࠪ
    $PMMFDUJPOͰ͸ͳ͍
    ͭ·Γ*UFSBCMF͕࣮૷͞Ε͍ͯͳ͍
    FOUSZ4FU
    Ͱ4FU&OUSZʹͯ͠
    ͔ΒͿΜ·Θ͢ɻ
    LFZ4FU
    ΍WBMVFT
    ΋͋Δ͚Ͳɺѹ౗
    తʹFOUSZ4FU
    ͷग़൪͕ଟ͍ɻ

    View Slide

  53. ૚ฒͼॱ
    ൺֱ͢ΔͨΊͷ
    $PNQBSBCMF͕࣮૷͞ΕͨΫϥε
    ͕ཁૉͳΒͦͷॱͰฒ΂ΒΕΔ
    ฒͼସ͕͑ࣗ༝ʹͰ͖ΔͱΘ͔ͬͯΔ
    ײ͋Δ

    View Slide

  54. ૚ฒͼॱ
    ฒͼସ͑Δ࣌ʹ༩͑Δɻ

    View Slide

  55. ૚$PNQBSBUPS
    $PNQBSBUPSͷϑΝΫτϦϝιο
    υʢDPNQBSJOHͱ͔ʣͰ࡞Δɻ
    $PNQBSBUPSΠϯλϑΣʔεΛ࣮૷͸
    ͠ͳ͍ɻ

    View Slide

  56. ૚$PNQBSBUPS-JTU
    -JTUΛιʔτ͢Δͱ͖ʹTPSUϝ
    ιουʹ$PNQBSBUPSΛ౉͚͢Ε
    Ͳɺ-JTU͕มߋՄೳ-JTU͔Ͳ͏͔
    Ͱ࣮ߦ࣌ΤϥʔʹͳΔɻ
    ࠷ۙ͸͋·Γ͠ͳ͍ɻ
    4USFBNͰTPSUͯ͠UP-JTUͪ͠Ό͏ɻ

    View Slide

  57. ૚4FU
    ॏෳ͠ͳ͍ίϨΫγϣϯͰ͢ɻ
    ॏෳ͢Δ͔Ͳ͏͔͸ಉ஋ੑʹ೚
    ͞Ε·͢ɻ
    ಉ஋ੑ͸࣌ؒ࣍ୈͰ͋ͱͰɻ
    جຊతʹॱং͸ͳ͍Ͱ͢ɻ
    ͋Δ͚ͲΞςʹͨ͠Βμϝɻ

    View Slide

  58. ૚4PSUFE4FU4PSUFE.BQ
    ͱ͸ݴ͑ʮ4FU࢖͍͍͚ͨͲॱং
    ΋ʔʯͱ͔ݴ͍ग़͢͜ͱ΋ଟ͍Ͱ
    ͢ɻΘ͕··ɻ
    ͳͷͰηοτͰ4PSUFE4FU΋཈͑
    ͓͖ͯ·͠ΐ͏ɻ
    ͍ͭͰʹ4PSUFE.BQ΋ɻ

    View Slide

  59. ൪֎$PMMFDUJPO
    $PMMFDUJPO͕ग़ͯ͘Δ͜ͱ͸໓ଟ
    ʹͳ͍Ͱ͢ɻ

    View Slide

  60. "SSBZ-JTU͡Όͳ͘-JTUΛ࢖͏

    View Slide

  61. ͦͷઌ
    ίϨΫγϣϯ͕બ΂Δ

    View Slide

  62. ൚༻࣮૷ͷબ୒ࢶ
    覚 ( 「⼊⾨」)

    View Slide

  63. ͨͩ͠
    ੑೳ໘͔Βద੾ͳίϨΫγϣϯΛબ
    Μͩͭ΋ΓͰ΋ɺ࠷ۙͷίϯϐϡʔ
    λʔϦιʔεͩͱޡࠩʹऩ·ͬͨΓ
    ͠·͢ɻίϨΫγϣϯͰؤுͬͨΓ
    ͢Δ·͑ʹɺઃܭ͸4USFBNɺαʔυ
    ύʔςΟʔͷ#FUUFSίϨΫγϣϯͰ
    ରॲ͢Δ΄͏͕ྑ͍ײ͡͸͠·͢ɻ

    View Slide

  64. ༩ଠ࿩
    ⽂句

    View Slide

  65. ࢖͑ͳ͍ϝιου͕͋Δ
    6OTVQQPSUFE0QFSBUJPO&YDFQUJPO
    ͕ى͜Δɻ࣮ߦ࣌ྫ֎ͭΒ͍ɻ
    ͜ΕKBWBMBOHύοέʔδͷͤ͘ʹ
    $PMMFDUJPOT'SBNFXPSLͷϝϯ
    όʔͳΜͰ͢ΑͶɻଞͰ΋࢖ΘΕ
    ͯΔ͚Ͳɻ

    View Slide

  66. OVMMͷѻ͍͕·ͪ·ͪ
    OVMM͕ೖΔίϨΫγϣϯͩͬͨΓɺೖΒͳ
    ͍ίϨΫγϣϯͩͬͨΓɺ·ͪ·ͪɻ
    OVMM͕ೖΒͳ͍ίϨΫγϣϯʹOVMMೖΕΔ
    ͱ࣮ߦ࣌ྫ֎ͭΒ͍ɻ
    +BWBEPDʹॻ͍ͯΔ͚Ͳಡ·ͳ͍ʢࣗനʣ
    ςετͰؾ͔ͮ͘Β͍͍͔ͳͬͯʜʜ

    View Slide

  67. ΀ΓΈͯ͌Ϳ
    JOUͱ͔CPPMFBOͱݴͬͨϓϦϛςΟϒ͸
    ʢ·ͩʣ௚઀ίϨΫγϣϯͰѻ͑ͳ͍ɻ
    Լखʹ΍ΔͱϘΫγϯάʗΞϯϘΫγϯ
    ά͕සൃ͢Δɻ
    ͚ͲϚγϯύϫʔ্͕ͬͯผʹ໰୊ʹͳ
    Βͳ͍ͷ΋ඍົʹ໘౗ͳͱ͜Ζɻ

    View Slide

  68. IBTI$PEFFRVBMT
    ίϨΫγϣϯͰ͸ཁૉಉ࢜Λൺֱ
    ͢Δ͜ͱ΋ଟ͍ɻ
    ͳͷͰ͜ΕΒΛѻ͑ͳ͍ͱʮίϨ
    Ϋγϣϯ࢖͑Δʯʹ͸ͳΒͳ͍ɻ
    ͜ͷ࣍ʹ$PNQBSBCMF͕ग़ͯ͘Δɻ

    View Slide

  69. ࿬ಓIBTI$PEF
    IBTI$PEF͕Ұக͍ͯͯ͠΋Π
    ίʔϧͰ͸ͳ͍ʢશવҧ͏ͷͰ
    ඃ͍͍ͬͯʣ
    IBTI$PEF͕ҧͬͨΒඞͣҧ͏ʹ
    ͠ͳ͖Ό͍͚ͳ͍

    View Slide

  70. ͍ͨͩ͠IBTI$PEFͷ࣮૷
    役 ⽴

    View Slide

  71. IBTI$PEFFRVBMTͷ࣮૷
    ͖ͯͱ͏ʹ͠Β΂͍ͯͩ͘͞ɻ
    *%&ʹ࡞ΒͤΔͰ΋͍͍͠ɺ
    SFDPSEʹཔΔͰ΋͍͍͠ɻ

    View Slide

  72. ίϨΫγϣϯͱ
    γϦΞϥΠζ

    View Slide

  73. γϦΞϥΠζ
    ࣮຿Ͱ͸΄ͱΜͲҙࣝ͞Εͳ͍
    Ͱ͋Ζ͏4FSJBMJ[BCMFͷ࿩ɻ
    ஌Βͳ͍͍ͯ͘Μ͚ͩͲɺ஌Β
    ͳ͍ͳΒ࢖Θͳ͍͜ͱɻ࢖͏ͳ
    Β஌͓͔ͬͯͳ͖Ό͍͚ͳ͍ɻ

    View Slide

  74. 4FSJBMJ[BCMFੲ࿩
    Ұੲલ͸ηογϣϯϨϓϦέʔγϣϯͱ͔Ͱඞཁ
    ͩͬͨΓͰඞ͚ͣͭ·͠ΐ͏ͱ͔ͳͬͯͨΜ͚ͩ
    Ͳɺࠓ͸ΦϒδΣΫτΛγϦΞϥΠζ͢Δํ๏͕
    ͜ΕʹݶΒͳ͘ͳͬͯΔͷͰग़൪ݮͬͯΔɻ
    ηογϣϯϨϓϦέʔγϣϯͰ΋SFEJTͱ͔ͷ֎෦
    ετϨʔδ࢖͏ͳΒͦͬͪ޲͚ͷγϦΞϥΠζΛ
    ͢Ε͹͍͍ͷͰɻ
    ͨͱ͑͹+40/ʹॻ͖ग़͢ͳΒ4FSJBMJ[BCMFཁΒͳ͍ɻ

    View Slide

  75. 4FSJBMJ[BCMFੲ࿩
    TFSJBM7FSTJPO6*%ͱ͍͏΋ͷ

    ʮܯࠂͰΔ͔Β΍ͬͱ͜͏ʯ͘Β͍Ͱ࡞
    ΒΕͯͨΓ͢Δɻ
    ͦΕͳΒ࡞Βͳ͍ํ͕ϚγͳΜ͚ͩͲͳ͊ʜʜ
    ͱԣ໨ͰݟͯΔɻ࣮֐ͳ͍ͷͰ͠͹͠͹εϧʔͪ͠Ό͏ɻ

    ͜ͷ࿩Λ࢝ΊΔͱऴΘΒͳ͍ͷͰলུɻ

    View Slide

  76. ίϨΫγϣϯͱγϦΞϥΠζ
    -JTU͸4FSJBMJ[BCMFͰ͸ͳ͍
    $PMMFDUJPOT'SBNFXPSLͷΠϯλ
    ϑΣʔε͸શ෦4FSJBMJ[BCMFͰ͸ͳ͍
    "SSBZ-JTU͸4FSJBMJ[BCMFͰ͋Δ

    View Slide

  77. ͨͱ͑͹͜͏͍͏࣮૷
    NG 。
    保証 。

    View Slide

  78. )BTI4FUͷத਎

    View Slide

  79. )BTI4FUͷத਎
    ॏෳΛͳ͍ͨ͘͠ͱ͖ʹΑ͘࢖Θ
    ΕΔ)BTI4FU͸ɺ)BTI.BQͱࣅ
    ͍ͯΔ͚ΕͲɺ)BTI.BQ͕Ωʔ
    ͱ஋ͷϖΞͰ͋Δͷʹରͯ͠
    )BTI4FU͸ཁૉ͚ͩΛѻ͏ͷͰγ
    ϯϓϧͩͱࢥ͏͔΋͠Εͳ͍ɻ

    View Slide

  80. KBWBVUJM)BTI4FU

    View Slide

  81. KBWBVUJM)BTI4FU
    👈
    中⾝HashMap

    View Slide

  82. ੲͷࢠͨͪ

    View Slide

  83. ग़͖ͯͨΒʮ͋ɺੲͷʜʜʯͱ
    Թ͔͍໨Ͱݟ͍ͯ͋͛ͯͩ͘͞
    「昔」 ⾔ 側 24年前問題

    View Slide

  84. ίϨΫγϣϯͷ
    ެࣜυΩϡϝϯτ

    View Slide

  85. ެࣜυΩϡϝϯτ
    存在知 辿 着 問題

    View Slide

  86. ͨͲΓ͖͔ͭͨ

    View Slide

  87. View Slide

  88. όʔδϣϯ
    ̓
    分布差 込
    出典 感覚

    View Slide

  89. όʔδϣϯ
    ̓
    実際⾒ 現場 割合

    View Slide

  90. 👇

    View Slide

  91. 👉

    View Slide

  92. 👈

    View Slide

  93. 👇

    View Slide

  94. 👈

    View Slide

  95. View Slide

  96. 👈

    View Slide

  97. View Slide

  98. 読 物 ⾯⽩

    View Slide