プロトコル指向フレンズ -Class to Struct-

Transcript

1. ϓϩτίϧࢦ޲ϑϨϯζ - Class to Struct - @satoshin21

2. satoshin21 SatoshiN21 ௕ࡔ ޛࢤ (Nagasaka Satoshi) - iOS Engineer of

   pairs Div. eureka, Inc. - Swift, Objective-C, Java(Android), Apple Script

3. - Pairs - Couples - We are hiring!!

4. Objecive-C͔ΒSwift΁

5. ΦϒδΣΫτࢦ޲(OOP)͔Β ϓϩτίϧࢦ޲(POP)΁

6. ϓϩτίϧࢦ޲ͬͯʁ

7. protocolΛ࢖͑͹ ϓϩτίϧࢦ޲Ͱ͢

8. ͦΜͳ;͏ʹߟ͍͑ͯͨ࣌ظ͕ ๻ʹ΋͋Γ·ͨ͠

9. POPͱOOP͕ܾఆతʹҧ͏ॴ͸

10. ClassΛ࢖͏͔ʁ StructΛ࢖͏͔ʁ

11. ͱߟ͑Δํ͕͍ۙ

12. ΋͘͠͸

13. ΦϒδΣΫτࢦ޲(Class)ͷऑ఺Λ

14. StructͱProtocolͰղܾ͢Δ ύϥμΠϜ

15. ͦΕ͕ϓϩτίϧࢦ޲

16. ΦϒδΣΫτࢦ޲ͱ͸ʁ

17. ΦϒδΣΫτࢦ޲ ‣ &ODBQTVMBUJPO ΧϓηϧԽ
    ‣ "DDFTT
    $POUSPM Մࢹੑ੍ޚ
    ‣

    "CTUSBDUJPO ந৅Խ
    ‣ /BNFTQBDF ໊લۭؒ
    ‣ &YQSFTTJWF
    4ZOUBY දݱྗͷ͋Δߏจɻϝιου΍ϓϩύςΟΛ ܨ͛ͯॻ͚ͨΓ
    ͳͲ
    ‣ &YUFOTJCJMJUZ ֦ுੑ

18. ΦϒδΣΫτࢦ޲ ‣ &ODBQTVMBUJPO ΧϓηϧԽ
    ‣ "DDFTT
    $POUSPM Մࢹੑ੍ޚ
    ‣

    "CTUSBDUJPO ந৅Խ
    ‣ /BNFTQBDF ໊લۭؒ
    ‣ &YQSFTTJWF
    4ZOUBY දݱྗͷ͋Δߏจɻϝιου΍ϓϩύςΟΛ ܨ͛ͯॻ͚ͨΓ
    ͳͲ
    ‣ &YUFOTJCJMJUZ ֦ுੑ ͜ΕΒ͸ܕ(Type)ͷಛ௃

19. ΦϒδΣΫτࢦ޲ͷऑ఺

20. ΦϒδΣΫτࢦ޲ͷऑ఺ ‣ ҉໧తͳΦϒδΣΫτͷڞ༗
    w ࢀর͍ͯ͠ΔΦϒδΣΫτ͕ଞͷΦϒδΣΫτͱڞ༗
    w ʮࢀর͍ͯ͠ΔΦϒδΣΫτ͕উखʹҧ͏΋ͷʹͳͬͨΑʂͳʹ ͜Εͳʹ͜Εʂʯ

21. ΦϒδΣΫτࢦ޲ͷऑ఺ ‣ ܧঝؔ܎Λ೺Ѳ͢Δͷ͕େม
    w ͜ͷ6TFS%FUBJM7JFX$POUSPMMFS͸%FUBJM7JFX$POUSPMMFSΛܧঝ ͍ͯͯ͠͞ΒʹͦͷεʔύʔΫϥεʹ͸#BTF7JFX$POUSPMMFS͕
    w εʔύʔΫϥε͕ͲͷΑ͏ͳڍಈΛ͢Δͷ͔ɺͲͷΑ͏ͳΦϒδΣ ΫτΛอ͍࣋ͯ͠Δͷ͔Λ೺Ѳ͠ͳ͚Ε͹ͳΒͳ͍
    w

    ʮ͜ͷεʔύʔΫϥεͷ஋Λमਖ਼ͨ͠Βಈ͔ͳ͘ͳͬͨΑʔʂ
    
    
    
    ͢͝ʔ͍ʂʯ

22. ͳͲ

23. ͦ͜Ͱొ৔͢Δͷ͕ ϓϩτίϧࢦ޲

24. ϓϩτίϧࢦ޲Ͱ͸جຊతʹ Class͸࢖Θͳ͍

25. StructͱProtocolͷΈ

26. Class to Struct

27. ClassͱStruct $MBTT 4USVDU ܕ 5ZQF ࢀরܕ ஋ܕ ܧঝ Ͱ͖Δ Ͱ͖ͳ͍

    ϓϩύςΟมߋ Մೳ جຊతʹෆՄೳ

28. class DataStore { var strings = [String]() func add(string: String)

    { strings.append(string) } } ClassΛ༻͍ͨ৔߹

29. let dataStore = DataStore() dataStore.add(string: "Foo") dataStore.add(string: "Bar") let classA

    = ReferenceClassA(dataStore: dataStore) classA.add(string: "hoge") let stringA = classA.dataStoreString() // -> [“Foo","Bar","hoge"] ClassΛ༻͍ͨ৔߹

30. let dataStore = DataStore() dataStore.add(string: "Foo") dataStore.add(string: “Bar") let classA

    = ReferenceClassA(dataStore: dataStore) classA.add(string: "hoge") let stringA = classA.dataStoreString() // -> ["Foo","Bar","hoge"] let classB = ReferenceClassB(dataStore: dataStore) classB.dataStore.strings.removeAll() let stringAre = classA.dataStoreString() // -> [] ClassΛ༻͍ͨ৔߹

31. Structͷ৔߹

32. struct DataStore { var strings = [String]() mutating func add(string:

    String) { strings.append(string) } } StructΛ༻͍ͨ৔߹

33. var dataStore = DataStore() dataStore.add(string: "Foo") dataStore.add(string: "Bar") var structA

    = ReferenceStructA(dataStore: dataStore) structA.dataStore.add(string: "hoge") let stringA = structA.dataStoreString() // -> [“Foo","Bar","hoge"] StructΛ༻͍ͨ৔߹

34. var dataStore = DataStore() dataStore.add(string: "Foo") dataStore.add(string: "Bar") var structA

    = ReferenceStructA(dataStore: dataStore) structA.dataStore.add(string: "hoge") let stringA = structA.dataStoreString() // -> ["Foo","Bar","hoge"] var structB = ReferenceStructB(dataStore: dataStore) structB.dataStore.strings.removeAll() let stringAre = structA.dataStoreString() // -> ["Foo","Bar","hoge"] StructΛ༻͍ͨ৔߹

35. ࢀরઌ͕มԽ͢Δ͜ͱΛ ؾʹ͠ͳͯ͘ྑ͍

36. ͨͩɺStruct͸ܧঝ͕࢖͑ͳ͍

37. is-aؔ܎ͱ͔ಉ͡;Δ·͍ఆٛ ͢Δͱ͖ͱ͔Ͳ͏͢Μͷʁ

38. ͦ͜ͰProtocol

39. ΦϒδΣΫτࢦ޲ʹΑΔܧঝؔ܎ "OZ0CKFDU &NQMPZFF %FWFMPQFS %JSFDUPS J04%FWFMPQFS
    ʜ

40. ϓϩτίϧࢦ޲ )BT1SPHSBNNJOH4LJMM %JSFDUPS J04%FWFMPQFS
    "OESPJE%FWFMPQFS
    )BT.BOBHFNFOU4LJMM

41. ϓϩτίϧࢦ޲ͷར఺ ‣ ґଘؔ܎ΛϑϥοτʹͰ͖Δ
    ‣ ؔ܎ੑ΋௥͍΍͍͢
    ‣ 1SPUPDPM
    &YUFOTJPOʹΑΓɺΦϒδΣΫτࢦ޲ͷܧঝͰ࣮ݱ͖ͯ͠ ͨίʔυͷ࠶ར༻ੑ΋อͯΔ

42. Swift Standart LibraryͰ͸ɺ طʹclass͸1ͭΛ࢒͢ͷΈ

43. ͜ΕͰ໌೔͔Β ϓϩτίϧࢦ޲ϑϨϯζͩͶʔʂ

44. ͙͢ʹ͸೉ͦ͠͏

45. ϓϩτίϧࢦ޲ͷ໰୊఺ ‣ ΦʔϓϯιʔεԽ͞Εͯ͸͍Δ͕ɺະͩ4XJGU͸J04 ͳ͍͠͸ NBD04ΞϓϦ։ൃݴޠͷΠϝʔδ͕ڧ͍
    ‣ ͭ·Γɺ$PDPB
    'SBNFXPSLͱ஥ྑ͘͠ͳ͚Ε͹ͳΒͳ͍
    ‣ $PDPB
    'SBNFXPSL͸DMBTTϕʔε
    ‣

    ΦϒδΣΫτࢦ޲ͱ൱͕ԠͰ΋෇͖߹͏ඞཁ͕͋Δ
    ‣ ͦΕ͸ɺΦϒδΣΫτࢦ޲ͷةݥੑ ҉໧తΦϒδΣΫτڞ༗ Λ͸ ΒΜͰ͍Δͱ͍͏͜ͱ

46. ·ͨɺແཧʹ classͱstructΛڞଘͤ͞Δͱɾɾ

47. ClassͱStruct $MBTT 4USVDU ܕ 5ZQF ࢀরܕ ஋ܕ ܧঝ Ͱ͖Δ Ͱ͖ͳ͍

    ϓϩύςΟมߋ Մೳ جຊతʹෆՄೳ

48. ClassͱStruct $MBTT 4USVDU ܕ 5ZQF ࢀরܕ ஋ܕ ܧঝ Ͱ͖Δ Ͱ͖ͳ͍

    ϓϩύςΟมߋ Մೳ جຊతʹෆՄೳ ͜ͷҧ͍Λৗʹҙࣝ͢Δඞཁ͕͋Δ

49. ·ͩզʑ͸ ΦϒδΣΫτࢦ޲͔Β཭ΕΒΕͳ͍

50. Swift͸ϚϧνύϥμΠϜͳͷͰ ͏·͘ڞଘ͍ͤͯ͘͞ࣄ͕ॏཁ

51. ΁ʔ͖΁ʔ͖ʂ

52. ύϥμΠϜʹΑͬͯ ͱ͍͘ͳ͜ͱҧ͏͔Βʂ

53. ֤ύϥμΠϜͷಛੑΛཧղͯ͠ ॊೈͳϓϩάϥϛϯάΛ

54. Thank you IUUQTXXXOBTBHPWNJTTJPO@QBHFT/11OFXTFBSUIBUOJHIUIUNM