パターンマッチングを学んで新しいJavaの世界へ！Java 18までの目玉機能をおさらいしよう / Java 18 pattern matching

Transcript

1. ύλʔϯϚονϯάΛֶΜͰ
   ৽͍͠+BWBͷੈք΁ʂ
   +BWB·Ͱͷ໨ۄػೳΛ
   ͓͞Β͍͠Α͏
   ++6($$$4QSJOH
   

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2. Θͨ͠
   • Α͜ͳ !JIDPNFHB
   
   • %FWFMPQFS"EWPDBUF!+'SPH
   • ݩ͸ݱ৔ͷόοΫΤϯυΤϯδχΞ
   • ʰ͍ͪ͹Μ΍͍͞͠(JU(JU)VCͷڭՊॻʱ
   • ࠷ۙεΧΠμΠϏϯάΛͨ͠
   1
   

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3. ϦϦʔεαΠΫϧ͕มΘͬͨͷ͸
   ೥݄ +BWB͔Β
   ΋͏೥͕ܦա͠Α͏ͱͯ͠Δʜ
   2
   

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4. ΩϟονΞοϓͷ
   ਐḿͲ͏Ͱ͔͢ʁ
   3
   

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5. Ξοϓσʔτͷྫ +BWB
   
   var nanikore = Map.of(
   1, List.of("いぬ", "ねこ", "たぬき"),
   2, List.of("こあら", "ぱんだ"));
   ϩʔΧϧม਺ͷ
   ܕਪ࿦
   4
   

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6. Ξοϓσʔτͷྫ +BWB
   
   String memo = """
   %s 以降
   テキストブロックで
   複数⾏の⽂字が
   書けるようになった
   """.formatted("Java 15");
   ςΩετϒϩοΫ
   5
   

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7. Ξοϓσʔτͷྫ +BWB
   
   if (sth instanceof String s) {
   System.out.println(s);
   } JOTUBODFPGʹΑΔ
   ύλʔϯ
   Ϛονϯά
   6
   

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8. ෼͔Γ΍͍͢΋ͷɺ
   ΠϚΠνԿ͕خ͍͠ͷ͔
   ௫ΈͮΒ͍΋ͷ
   ৭ʑ͋ΔΑͶ
   7
   

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9. ࠓ೔ͷςʔϚ͸
   ύλʔϯϚονϯά
   8
   

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10. ͡Θ͡ΘਐΉػೳ֦ுʹΑΓ
    ݟ͑ͮΒ͘ͳ͍ͬͯΔ͔΋
    ͠Εͳ͍ศར͞Λ
    Ұॹʹֶ΅͏ʂ
    9
    

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11. ͜ͷηογϣϯͰ஌Ζ͏
    • ύλʔϯϚονϯά
    • +BWB·ͰΛ࢖ͬͨύλʔϯϚονϯά
    • +BWBҎ߱ͰͷਐԽ
    • 1SPKFDU"NCFS΍ϦϦʔεαΠΫϧ
    10
    

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12. ύλʔϯϚονϯάͱ͸ Ұൠ࿦
    
    • ෼͔Γ΍͘͢ݴ͏ͱ৚݅൑ఆͷͻͱͭ
    • ஋Λύλʔϯͱর߹͠ɺҰக Ϛον
    ͢Δ͔֬ೝ͢Δ
    • Ұக͔ͨ͠Ͳ͏͔Ͱ৚݅Λ෼ذͨ͠Γɺ஋Λ෼ղͯ͠
    ࢖ͬͨΓ͢Δ͜ͱ΋Ͱ͖Δ
    11
    

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13. ύλʔϯϚονϯάͱ͸ Ұൠ࿦
    
    “Ն” “य़”
    “Ն”
    “ळ”
    “ౙ”
    12
    

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14. ύλʔϯϚονϯάͱ͸ Ұൠ࿦
    
    🌻 🌹 🌸 🌷 🌸 🌸 🌸 🌸
    🌷 🌹 🌻 🌸
    🌻 🌹 🌸 🌷
    🌻 🌹 ❓ ❓
    💐 💐 💐 💐
    13
    

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15. ύλʔϯϚονϯάͱ͸
    🌻 🌹 🌸 🌷
    🌻 🌹 ❓ 🌷
    Bʹ 🌹
    র߹ ෼ղ
    Cʹ 🌸
    14
    

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16. +BWBͰύλʔϯϚονϯά
    • TXJUDIࣜ
    • JOTUBODFPGΛ࢖ͬͨύλʔϯϚονϯά
    • TXJUDIΛ࢖ͬͨύλʔϯϚονϯά
    • Ϩίʔυ 3FDPSE
    
    • γʔϧΫϥε 4FBMFEDMBTT
    
    +BWB͔Β
    গͣͭ͠
    ಋೖ͞Ε͍ͯΔΑ
    15
    

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17. ͲͷόʔδϣϯͰԿ͕ೖ͔ͬͨ͸
    ͍ͬͨΜ๨Εͯɺ
    +BWB ϓϨϏϡʔؚΉ
    
    ͰͰ͖Δ͜ͱ Λ
    ·ͣ͸஌Ζ͏
    16
    

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18. ϓϨϏϡʔػೳͱ͸
    • ਖ਼ࣜϦϦʔεલͷػೳ
    • ࣮ࡍʹ࢖ͬͯͷϑΟʔυόοΫΛಘΔͨΊެ։͞ΕΔ
    • KBWBD΍KBWBίϚϯυʹ FOBCMFQSFWJFXϑϥάΛ
    ෇͚࣮ͯߦ͢Δͱ༗ޮʹͳΔ
    • KBWBDSFMFBTFEFOBCMFQSFWJFX)PHFKBWB
    • KBWBFOBCMFQSFWJFX)PHF
    • KTIFMM΍KBWBEPDίϚϯυͰ΋࢖͑Δ
    • *%&Ͱ΋αϙʔτ͕͋Δ
    17
    

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19. γϯϓϧͳύλʔϯϚονϯά
    String season = “夏”;
    String result = switch (season) {
    case “春” -> “Spring”;
    case “夏” -> “Summer”;
    case “秋” -> “Fall”;
    case “冬” -> “Winter”;
    default -> "Nothing";
    }
    18
    

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20. TXJUDIࣜ
    • TXJUDIΛʮࣜʯͱͯ͠࢖͑Δʢ஋Λฦ͢ʣ
    • ͜Ε΋ύλʔϯϚονϯάͷͻͱͭʢఆ਺ύλʔϯʣ
    19
    

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21. ΋͏গ͠ෳࡶͳྫͰ
    ύλʔϯϚον
    ϏϑΥʔΞϑλʔΛ
    ݟ͍ͯ͜͏
    20
    

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22. ߟ͑Δͷʹ࢖͏αϯϓϧ
    ϝϞா
    • ςΩετϝϞ
    • 50%0Ϧετ
    • ը૾͖ͭςΩετϝϞ
    • શͯ*%ͱλΠτϧΛ࣋ͭ
    • ϝϞͷߏ଄͕֤ʑҟͳΔ
    21
    

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23. γφϦΦ
    ϞσϧΛ༻ҙ͢Δ
    ௚઀తʹ͸
    ύλʔϯϚονϯάͷ
    ࿩Ͱ͸ͳ͍͚Ͳ
    ޙʑ࢖͏ͷͰ঺հ͠·͢
    22
    

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24. ϞσϧΛ༻ҙ͢Δ
    • େྔͷΫϥεΛ࡞੒͢Δ
    • ͦͷ෼ϘΠϥʔϓϨʔτ΋ॻ͘
    23
    

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25. ϞσϧΛ༻ҙ͢Δ چ
    
    public class Text implements Memo {
    private Id id;
    private Title title;
    private Body body;
    public Text(Id id, Title title, Body body) {
    this.id = id;
    this.title = title;
    this.body = body;
    }
    // setter/getter
    // toString()
    // equals()
    // hashCode()
    } 24
    

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26. ՝୊
    • ͍ͨ΁Μ
    25
    

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27. ϞσϧΛ༻ҙ͢Δ ৽
    
    record Text(Id id, Title title, Body body) implements Memo {}
    26
    

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28. ϨίʔυΫϥε
    record Text(Id id, Title title, Body body) implements Memo {}
    • SFDPSEΩʔϫʔυ෇͖ͰΫϥεΛఆٛ͢Δ
    • (Id id, Title title, Body body) ෦෼ʮ Ϩίʔυ
    ϔομʔʯʹ
    ʮ Ϩίʔυ
    ίϯϙʔωϯτʯΛఆٛͰ͖Δ
    27
    

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29. ϨίʔυΫϥε
    Լه͕ࣗಈͰੜ੒͞ΕΔ
    • ϔομʔͱಉ͡ϑΟʔϧυΛ࣋ͬͨίϯετϥΫλ
    • ֤ίϯϙʔωϯτʹରͯ͠ͷ
    • QSJWBUFGJOBMͳϑΟʔϧυ ίϯϙʔωϯτͱಉ໊
    
    • QVCMJDͳΞΫηαʔϝιου ίϯϙʔωϯτͱಉ໊
    
    • FRVBMT
    ϝιου IBTI$PEF
    ϝιου
    ಉ͡ܕͰ֤ίϯϙʔωϯτ͕ಉ͡஋Λ࣋ͬͨϨίʔυ͔Ͳ͏͔
    • UP4USJOH
    ϝιουίϯϙʔωϯτͷ໊લͱ஋Λฦ͢
    28
    

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30. ϨίʔυΫϥε
    • ϨίʔυΫϥεɺίϯϙʔωϯτ͔Βੜ੒͞ΕͨϑΟʔϧυ͸
    ҉໧తʹGJOBM ΠϯελϯεΛΠϛϡʔλϒϧʹอͭࢥ૝
    
    • ଞͷΫϥεΛܧঝͰ͖ͳ͍ KBWBMBOH3FDPSEΛܧঝ͍ͯ͠Δ
    ͨΊ
    
    • ΠϯλʔϑΣʔεͷ࣮૷͸Ͱ͖Δ
    • ଞͷΫϥε͔Βͷܧঝ΋Ͱ͖ͳ͍ GJOBMͳͷͰ
    
    • Ϋϥεͱಉ༷ϝιου͕એݴͰ͖Δ
    • ϔομʔҎ֎ʹΠϯελϯεϑΟʔϧυ͸એݴͰ͖ͳ͍
    29
    

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31. ϨίʔυΫϥε
    public interface Memo {
    …
    record Text(Id id, Title title, Body body) implements Memo {}
    record TodoList(Id id, Title title, List tasks)
    implements Memo {}
    record Image …
    }
    • Ϋϥε΍ΠϯλʔϑΣʔεͷதʹఆٛͰ͖Δ
    • ೖΕࢠʹ͢Δ͜ͱͳ͘ಉϑΝΠϧʹఆٛ΋Ͱ͖Δ
    • ΋ͪΖΜผϑΝΠϧͰͷఆٛ΋Ͱ͖Δ
    ͜͏͢Ε͹ϑΝΠϧʹఆٛͰ͖Δ͕
    QVCMJDͳϨίʔυʹ͍ͨ͠৔߹
    ೖΕࢠʹ͢Δ͔͠ͳ͍ɻ
    ݟ׳Εͳ͍ίʔυʹͳΔ΋ͷͷศར
    30
    

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32. γφϦΦ
    ϏδωεϩδοΫ࣮૷ฤ
    ϝϞͷछྨ͝ͱʹॲཧΛৼΓ෼͚Δ
    31
    

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33. String doSomethingForEach(Memo memo) {
    if (memo == null) {
    return "nullが来た";
    } else if (memo instanceof Text) {
    Text text = (Text) memo;
    return doSomethingForText(text);
    } else if (memo instanceof TodoList) {
    TodoList todo = (TodoList) memo;
    return doSomethingForTodoList(todo);
    } else if (memo instanceof Image) {
    Image image = (Image) memo;
    return doSomethingForImage(image);
    } else {
    return "おかしな値が来た";
    }
    }
    ϝϞͷछྨ͝ͱʹ
    ॲཧΛৼΓ෼͚Δ چ
    
    32
    

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34. ՝୊
    • JGFMTF஍ࠈʹؕΔ
    • ܕʹΑΔ൑ఆΛߦ͏ࡍɺ൑ఆͱ࢖༻͕ผͷεςοϓʹ෼͔ΕΔ
    • ͭ·Γɺίʔυྔ͕΍ͨΒͱଟ͘ͳͬͯಡΈͮΒ͍
    33
    

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35. String doSomethingForEach(Memo memo) {
    return switch (memo) {
    case null -> “nullが来た”;
    case Text t -> doSomethingForText(t);
    case TodoList td -> doSomethingForTodoList(td);
    case Image i -> doSomethingForImage(i);
    default -> "おかしな値が来た";
    };
    }
    ϝϞͷछྨ͝ͱʹ
    ॲཧΛৼΓ෼͚Δ ৽
    
    34
    ໼ҹ͕ἧ͏Α͏ͳ
    ϑΥʔϚοτʹ͢Δͱ
    ಡΈ΍͍͢
    

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36. ܕͰύλʔϯϚονϯά
    • ܕͰύλʔϯϚονϯάͰ͖Δ ܕʗλΠϓύλʔϯ
    
    • ܕʹϚονͨ͠Β஋͕ม਺ʹऔΓग़͞ΕΔ
    • ύλʔϯม਺ͱݴ͍ɺείʔϓ͸Ϛονͨ͠έʔεͷதͷΈ
    • Ϩίʔυͱͯ͠ఆٛ͞ΕͨܕͰ΋ύλʔϯϚονϯάͰ͖Δ
    35
    

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37. case null, Text t -> “null͔ςΩετϝϞ”;
    case null, default -> “null͔͓͔͠ͳ஋”;
    • ࠓͷͱ͜ΖҟͳΔܕΛ·ͱΊͯॻ͘͜ͱ͸Ͱ͖ͳ͍͕ɺOVMMͱ
    ଞͷέʔε͸·ͱΊΒΕΔ
    • OVMMͷ৔߹ύλʔϯม਺Λ࢖͏ͱ౰વ/VMM1PJOUFS&YDFQUJPO
    ϝϞͷछྨ͝ͱʹ
    ॲཧΛৼΓ෼͚Δ ৽
    
    36
    

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38. γφϦΦ
    ϏδωεϩδοΫ࣮૷ฤ
    ͞Βʹࡉ͔͘ॲཧΛৼΓ෼͚Δ
    37
    

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39. String doSomethingForEach(Memo memo) {
    if (memo == null) {
    return “nullが来た”;
    } else if (memo instanceof Text) {
    Text text = (Text) memo;
    return doSomethingForText(text);
    } else if (memo instanceof TodoList) {
    TodoList todo = (TodoList) memo;
    if (0 < todo.tasks().size()) {
    return doSomethingForTodoList(todo);
    } else {
    return "ToDoが空っぽ";
    }
    } else if (memo instanceof Image) {
    Image image = (Image) memo;
    return doSomethingForImage(image);
    } else {
    return "おかしな値が来た";
    }
    }
    ৚݅Λ௥Ճ͢Δ چ
    
    38
    

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40. …
    } else if (memo instanceof TodoList) {
    TodoList todo = (TodoList) memo;
    if (0 < todo.tasks().size()) {
    return doSomethingForTodoList(todo);
    } else {
    return "ToDoが空っぽ";
    }
    } else if…
    ৚݅Λ௥Ճ͢Δ چɾ֦େ
    
    39
    

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41. ՝୊
    • ෳࡶ͕͞ߴ·ΓՄಡੑ͕ͲΜͲΜԼ͕Δ
    40
    

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42. return switch (memo) {
    case null -> "nullが来た";
    case Text t -> doSomethingForText(t);
    case TodoList td && 0 < td.tasks().size()
    -> doSomethingForTodoList(td);
    case TodoList td -> "ToDoが空っぽ";
    case Image i -> doSomethingForImage(i);
    default -> "おかしな値が来た";
    };
    ৚݅Λ௥Ճ͢Δ ৽
    
    41
    

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43. ΨʔυύλʔϯʗύλʔϯΨʔυ
    case TodoList td && 0 < td.tasks().size()
    -> doSomethingForTodoList(td);
    case TodoList td -> "ToDoが空っぽ";
    • ύλʔϯϚονϯάʹ৚݅Λ௥ՃͰ͖Δ
    • ৚݅ʹ߹க͠ͳ͍৔߹ͷॲཧΛॻ͖๨Εͳ͍Α͏ʹ͠Α͏
    42
    

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44. γφϦΦ
    ࢓༷มߋฤ
    ϝϞͷछྨΛ૿΍͢
    43
    

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45. ϝϞͷछྨΛ૿΍͢
    public interface Memo {
    …
    record Text(Id id, Title title, Body body )
    implements Memo {}
    record TodoList(Id id, Title title, List tasks)
    implements Memo {}
    record Image(Id id, Title title, ImageUrl url, Body body )
    implements Memo {}
    record Video(Id id, Title title, VideoUrl url )
    implements Memo {}
    }
    44
    

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46. return switch (memo) {
    case null -> "nullが来た";
    case Text t -> doSomethingForText(t);
    case TodoList td && 0 < td.tasks().size()
    -> doSomethingForTodoList(td);
    case TodoList td -> "ToDoが空っぽ";
    case Image i -> doSomethingForImage(i);
    case Video v -> doSomethingForVideo(v);
    default -> "おかしな値が来た";
    };
    ϝϞͷछྨΛ૿΍͢
    45
    

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47. ՝୊
    • ݺͼग़͠Օॴͷௐ͕ࠪେมɾݟམͱ͠ͷ΋ͱ
    46
    

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48. ϝϞͷछྨΛ૿΍͢
    sealed public interface Memo {
    …
    record Text(Id id, Title title, Body body )
    implements Memo {}
    record TodoList(Id id, Title title, List tasks)
    implements Memo {}
    record Image(Id id, Title title, ImageUrl url, Body body)
    implements Memo {}
    record Video(Id id, Title title, Video Url url)
    implements Memo {}
    }
    47
    

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49. γʔϧ υ
    Ϋϥε
    • TFBMFEΩʔϫʔυΛ͚ͭͯఆٛͨ͠Ϋϥε΍ΠϯλʔϑΣʔε
    • ܧঝɾ࣮૷ՄೳͳΫϥεΛԼهͷΈʹݶఆ͢Δ Ϩίʔυ΋Մ
    
    • QFSNJUT۟Λ͚ͭͯڐՄͨ͠Ϋϥε
    sealed public interface Memo permits Text, TodoList, Image, Video
    • ಉ͡ϑΝΠϧʹఆٛͨ͠Ϋϥε
    • ܕʹΑΔύλʔϯϚονϯάͰ͢΂ͯͷܕΛ໢ཏ͍ͯ͠Δ͜ͱ
    Λ୲อͰ͖Δ ໢ཏ͍ͯ͠ͳ͍৔߹͸ίϯύΠϧΤϥʔ
    
    • ύλʔϯϚονϯάʹ͓͚ΔEFGBVMU͕ඞਢͰͳ͘ͳΔ
    48
    

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50. return switch (memo) {
    case null -> "nullが来た";
    case Text t -> doSomethingForText(t);
    case TodoList td && 0 < td.tasks().size()
    -> doSomethingForTodoList(td);
    case TodoList td -> "ToDoが空っぽ";
    case Image i -> doSomethingForImage(i) ;
    case Video v -> doSomethingForVideo(v);
    };
    ϝϞͷछྨΛ૿΍͢
    49
    

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51. ͜͜·Ͱͷ͓͞Β͍
    • ύλʔϯϚονϯάΛ׆༻ͯ͠ϘΠϥʔϓϨʔτ͕ݮΒͤΔ
    • ݱঢ়
    +BWBͷύλʔϯϚονϯά͸TXJUDIΛ׆༻͢Δ
    • ܕύλʔϯΛ࢖͏ͱ͖͸γʔϧΫϥεͰϛε΋ݮΒͤΔ
    • ܕΛ׆༻͢Δ্ͰϨίʔυ͸͔ܽͤͳ͍
    50
    

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52. Ϩίʔυ͚ͩ
    ύλʔϯϚονϯάͱ
    བྷΊΔʹ͸ͪΐͬͱऑ͍ʜʁ
    51
    ͋ͱɺࠓ೔ͷྫͷΑ͏ʹ
    ෼ذޙʹ݁ہಉ͡Α͏ͳ
    ॲཧΛ͍ͤͨ͞৔߹ɺ
    ܧঝͰྑ͍ͷͰ͸ʁͱ͔
    

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53. +BWBʹظ଴
    if (memo instanceof Text(Id id, Title title, Body body)) {
    show(body);
    }
    --- OR ---
    if (memo instanceof Text(var id, var title, var body)) {
    show(body);
    }
    • Ϩίʔυύλʔϯ͕ಋೖ͞ΕΔ༧ఆ ϓϨϏϡʔ
    
    • ϨίʔυΛ༻͍ͨύλʔϯϚονϯάʹ͓͍ͯ෼ղ͕༰қʹͳΔ
    52
    

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54. ΋ͬͱকདྷ ˞ΠϝʔδͰ͢
    
    String doSomethingForEach(Memo memo) {
    return switch (memo) {
    case null -> "nullが来た";
    case Text(Id id, Title title, Body body)
    -> doSomethingForText(body);
    case TodoList(Id id Title title, List tasks)
    && 0 < tasks().size()
    -> doSomethingForTodoList(tasks);
    case TodoList _ -> "ToDoが空っぽ";
    case Image(Id id, Title title, ImageUrl url, Body body)
    -> doSomethingForImage(url, body);
    };
    }
    53
    

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55. Ϩίʔυύλʔϯɺ෼ղ
    54
    • ʮͲͷܕ͔ʯͷΈͳΒͣʮͲΜͳߏ଄͔ʯΛ;·͑ͯύλʔϯ
    ϚονϯάͰ͖Δ
    • ܧঝʹΑΔϙϦϞʔϑΟζϜ͚ͩͰදݱͮ͠Β͍ෳࡶͳέʔε
    ʢΦʔόʔϩʔυͨ͘͠ͳͬͨ࣌ͱ͔ʣͰ͸ಛʹ׆༻Ͱ͖Δ
    

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56. +BWBͰͷখ͞ͳมߋ
    case TodoList td when 0 < td.tasks().size()
    -> doSomethingForTodoList(td);
    • Ψʔυύλʔϯͷࢦఆ͕ Ͱ͸ͳ͘ XIFOʹมΘΔ
    • ෼͔Γ΍͢͞ͷͨΊΒ͍͠
    55
    

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57. +BWBύλʔϯϚονϯάมભ
    
    ϓϨϏϡʔ ਖ਼ࣜϦϦʔε
    TXJUDIࣜ
    JOTUBODFPG
    ύλʔϯϚον
    Ϩίʔυ
    γʔϧυ
    TXJUDI
    ύλʔϯϚον
    Ϩίʔυ
    ύλʔϯ
    56
    

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58. 1SPKFDU"NCFS
    • 0QFO+%,ͷ։ൃ͸ϓϩδΣΫτ୯ҐͰਐΉ
    • IUUQTPQFOKELKBWBOFUQSPKFDUT
    • ΰʔϧΛ໨ࢦͯ͠গͣͭ͠ػೳ௥Ճ͞ΕΔͷͰɺϓϩδΣΫτ
    ͱ͍͏୯Ґʹ஫໨͢Δͱ෼͔Γ΍͍͢
    • ͜͜·Ͱ঺հͨ͠ύλʔϯϚονϯάɺςΩετϒϩοΫɺ
    WBS͸શ෦ʮ1SPKFDU"NCFSʯͷ੒Ռ
    • IUUQTPQFOKELKBWBOFUQSPKFDUTBNCFS
    • 1SPKFDU"NCFS͸ݴޠʹؔ͢Δػೳվળू
    57
    

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59. ࠷৽ͷ৘ใΛಘΔʹ͸
    • +&1 +%,&OIBODFNFOU1SPQPTBM
    ͰϩʔυϚοϓΛ֬ೝͰ͖Δ
    • ྫTXJUDIࣜ͸+&1 +&1ͦͷ΋ͷͷઆ໌͸+&1
    • 0QFO+%,ͷެࣜϖʔδΛݟΔͱ෼͔Γ΍͍͢
    • IUUQTPQFOKELKBWBOFUQSPKFDUTKEL
    • ໨తɾ࢓༷΍࢖͍ํɾલճͱͷࠩ෼͕؆ܿʹॻ͔Ε͍ͯΔ
    • 'VUVSFXPSLΛಡΉͱ͞ΒͳΔల๬͕෼͔Δ
    • +&1ಉ࢜ͷؔΘΓ͕௫ΊΔ
    58
    

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60. ࠷ޙʹҰൠ+BWBϢʔβʔ໨ઢͰʜ
    • ௥͏ͷ͸େม
    • ͲΜͲΜ৽͍͠όʔδϣϯ͕΍ͬͯ͘Δ
    • ϓϨϏϡʔػೳ΋͋ͬͯࠓԿ͕ग़དྷΔͷ͔෼͔Βͳ͍
    • ԕ͘ʹ͋Δ໨త΍ҙຯΛ೺Ѳ͢Δͱ͔͑ͬͯ෼͔Γ΍͍͢
    • +&1΍ϓϩδΣΫτ͸ϚχΞοΫͳ஌ࣝͩͱࢥ͍ͬͯΔํ΋ɺ
    ஌Δ͜ͱͰָʹͳΕΔ͔΋ʜʁ
    ʜͦ͏͸͍ͬͯ΋େมͳͷͰίϛϡχςΟ΋׆༻͠Α͏ʂ🌟
    59
    

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61. 5IBOLZPV
    60
    

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