SwiftのDI方法について最近考えてた話 - iOS LT #28

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1. 4XJGUͷ%*ํ๏ʹ͍ͭ ͯ࠷ۙߟ͑ͯͨ࿩ J04
   -5
   
   ,B[VIJSP
   )":"4)*
2. ։ൃʹ%*ίϯςφΛಋೖ͍ͯ͠ΔͷͰ͕͢ɺ
   ಈతͳੑ࣭͕ਏ͍ͨΊ୤٫Λݕ౼தɻ
   ͦͷࡍʹௐ΂ͯͨ಺༰ΛγΣΞ͠·͢ɻ
3. %FQFOEFODZ
   *OKFDUJPOͱ͸ IUUQTNBSUJOGPXMFSDPNBSUJDMFTJOKFDUJPOIUNM w l੍ޚͷ൓సzΛߦ͏ͨΊ ͷύλʔϯ
   w lݺͼग़͠ݩz͕zݺͼग़͠ ઌzʹґଘ͢Δঢ়ଶΛ࣮ ݱ͢Δ
   w ۩ମతͳ࣮૷΁ͷґଘ͕ ֎ʹग़Δ
4. %FQFOEFODZ
   *OKFDUJPOͱ͸ ݺͼग़͠ݩͷ.PWJF-JTUFS͕ IUUQTNBSUJOGPXMFSDPNBSUJDMFTJOKFDUJPOIUNM w l੍ޚͷ൓సzΛߦ͏ͨΊ ͷύλʔϯ
   w lݺͼग़͠ݩz͕zݺͼग़͠ ઌzʹґଘ͢Δঢ়ଶΛ࣮ ݱ͢Δ
   w ۩ମతͳ࣮૷΁ͷґଘ͕ ֎ʹग़Δ
5. %FQFOEFODZ
   *OKFDUJPOͱ͸ ݺͼग़͠ઌͷΠϯλʔϑΣʔ εΛར༻ IUUQTNBSUJOGPXMFSDPNBSUJDMFTJOKFDUJPOIUNM w l੍ޚͷ൓సzΛߦ͏ͨΊ ͷύλʔϯ
   w lݺͼग़͠ݩz͕zݺͼग़͠ ઌzʹґଘ͢Δঢ়ଶΛ࣮ ݱ͢Δ
   w ۩ମతͳ࣮૷΁ͷґଘ͕ ֎ʹग़Δ
6. %FQFOEFODZ
   *OKFDUJPOͱ͸ ݺͼग़͠ઌͷΠϯλʔϑΣʔ εͷத਎ΛΫϥεͱ࣮ͯ͠ ૷ IUUQTNBSUJOGPXMFSDPNBSUJDMFTJOKFDUJPOIUNM w l੍ޚͷ൓సzΛߦ͏ͨΊ ͷύλʔϯ
   w lݺͼग़͠ݩz͕zݺͼग़͠ ઌzʹґଘ͢Δঢ়ଶΛ࣮ ݱ͢Δ
   w ۩ମతͳ࣮૷΁ͷґଘ͕ ֎ʹग़Δ
7. %FQFOEFODZ
   *OKFDUJPOͱ͸ "TTFNCMFSΫϥε͕ .PWJF-JTUFS΁࣮૷Λ஫ೖ ͢Δ IUUQTNBSUJOGPXMFSDPNBSUJDMFTJOKFDUJPOIUNM w l੍ޚͷ൓సzΛߦ͏ͨΊ ͷύλʔϯ
   w lݺͼग़͠ݩz͕zݺͼग़͠ ઌzʹґଘ͢Δঢ়ଶΛ࣮ ݱ͢Δ
   w ۩ମతͳ࣮૷΁ͷґଘ͕ ֎ʹग़Δ
8. %FQFOEFODZ
   *OKFDUJPOͱ͸ w ͜͏ͯ͠ʮ্ҐϨΠϠ͕Լ Ґ΁ґଘ͢Δʯ͕࣮ݱ
   w Ϣχοτςετ΍ϑϨʔϜ ϫʔΫ੾Γग़͕͠Ͱ͖Δ "QQMJDBUJPO 'SBNFXPSL ݺ͹ΕΔ ґଘ ্ҐϨΠϠ ԼҐϨΠϠ
9. %FQFOEFODZ
   *OKFDUJPOͱ͸ w ϥΠϒϥϦΛ࢖͏ʮಈతʯͳ΍Γํͱɺͦ͏Ͱ ͸ͳ͍ʮ੩తʯͳ΍Γํ͕͋Δ
   w ಈతʹ΍Δʹ͸͍ΘΏΔ%*ίϯςφΛಋೖ͢ Δ
   w ੩తʹߦ͏৔߹͸$BLF
   1BUUFSOͳͲͷ࣮૷ύ λʔϯ͕͋Δ
10. %*ίϯςφ
11. %*ίϯςφ w ґଘؔ܎ͷొ࿥ͱղআΛܾ·ͬͨϧʔϧͰߦ͏ ͜ͱ͕Ͱ͖ΔΑ͏ʹͳΔ
    w ґଘؔ܎͸શͯίϯςφʹΑͬͯొ࿥ɾղܾ͞ ΕΔΑ͏ʹͳΔ
12. 4XJOKFDU IUUQTHJUIVCDPN4XJOKFDU4XJOKFDU
13. 4XJOKFDU w0XOFS͸"OJNBMʹґଘ
    w$BU͸"OJNBMͷ࣮૷ͰOBNF ϓϩύςΟΛ࣋ͭ ྫ͑͹͜Μͳߏ଄ମͱϓϩτίϧ͕͋Δͱͯ͠ IUUQTHJUIVCDPN4XJOKFDU4XJOKFDUͷSFBENFΛࢀߟʹҰ෦վม
14. 4XJOKFDU wOBNFΛड͚औͬͯ$BUʹ ΠϯδΣΫτ
    wOBNFΛड͚औͬͯɺͦΕ Λ࢖ͬͯ$BUͷґଘղܾΛ ͯ͠ɺ0XOFS΁౉͢ $POUBJOFSΫϥεͷSFHJTUFSϝιουͰ
    ґଘؔ܎Λهड़͍ͯ͘͠ IUUQTHJUIVCDPN4XJOKFDU4XJOKFDUͷSFBENFΛࢀߟʹҰ෦վม
15. 4XJOKFDU IUUQTHJUIVCDPN4XJOKFDU4XJOKFDUͷSFBENFΛࢀߟʹҰ෦վม w0XOFSΛґଘղܾͯ͠ॳ ظԽ $POUBJOFSΫϥεͷSFTPMWFϝιουͰ
    ґଘؔ܎͕ొ࿥͞Ε͍ͯΔͱ͓Γղܾ͢Δ
16. 4XJOKFDU
    w ొ࿥ɾղܾ͕؆୯͔ܾͭ·ͬͨ΍Γํ ͰͰ͖ͯศར
    w 4XJGUͰϢχοτςετ͔͚ΔΑ͏ʹͳ Δ
17. 4XJOKFDUΛ࢖͍ͬͯͯ
    ੜ·Εͨ՝୊ ґଘղܾͷਖ਼͠͞͸࣮ߦ࣌ʹ͔͠Θ͔ Βͳ͍
    ϥΠϒϥϦ΁ϩοΫΠϯ͞Εͯ͠·͏
18. ґଘղܾͷਖ਼͠͞͸࣮ߦ࣌ʹ ͔͠Θ͔Βͳ͍ ྫ͑͹ઌఔͷΑ͏ʹ0XOFSΛSFTPMWF͢Δ࣌ʹ4USJOHͰ ͸ͳ͘4USJOH Λ౉ͯ͠΋Ϗϧυ͸௨ΓɺΤϥʔ͕ग़ྗ ͞ΕΔ 4USJOHͰ͸ͳ͘0QUJPOBMΛ౉͢
19. ϥΠϒϥϦ΁ϩοΫΠϯ͞Ε ͯ͠·͏ w ґଘղܾ͕ϥΠϒϥϦ΁ू໿͞ΕɺΞϓϦ શମͰͦΕʹґଘ͢ΔͨΊൈ͚ग़ͤͳ͍
    w 4XJGU΍͜ͷϥΠϒϥϦͷόʔδϣϯΞο ϓ΁͍͍ͭͯ͘ͷ͠ΜͲ͍
20. ίϯύΠϧ࣌νΣοΫ͕Ͱ͖ͯ
    ΋ͬͱܰྔͳ࢓૊ΈʹҠΓ͍ͨʜ
21. $BLF
    1BUUFSOͷ4XJGU࣮૷
22. $BLF
    1BUUFSOͷ4XJGU࣮૷ w 1SPUPDPMΛ࢖ͬͯґଘΛίϯϙδγϣϯ͍ͯ͠ ͘
    w 1SPUPDPM
    &YUFOTJPOʹΑͬͯ1SPUPDPMʹఆٛ͞ Εͨม਺ɾϝιουΛ࢖࣮ͬͯ૷Λهड़͢Δ
    w 4DBMB൛$BLF
    1BUUFSOͱ͸एׯߏ੒͕ҧ͏
23. $BLF
    1BUUFSOͷ4XJGU࣮૷ ίϯύΠϧ࣌νΣοΫ͕Ͱ͖ͯϥΠϒϥϦ΋ෆཁʂ w 1SPUPDPMΛ࢖ͬͯґଘΛίϯϙδγϣϯ͍ͯ͠ ͘
    w 1SPUPDPM
    &YUFOTJPOʹΑͬͯ1SPUPDPMʹఆٛ͞ Εͨม਺ɾϝιουΛ࢖࣮ͬͯ૷Λهड़͢Δ
    w 4DBMF൛$BLF
    1BUUFSOͱ͸एׯߏ੒͕ҧ͏
24. $BLF
    1BUUFSOͷ4XJGU࣮૷ ͭͷ໾ׂΛ࣋ͭϓϩτίϧ΍ΫϥεΛ࡞Δ
    
    ґଘର৅ͷϓϩτίϧͱͦͷ࣮૷ίʔυ
    
    ґଘ͢Δͱ͍͏ͷΛఆٛͨ͠ϓϩτίϧ
    
    ґଘΛ·ͱΊ্ͨҐϨΠϠͷϓϩτίϧ
    
    ґଘղܾʹಛԽͨ͠Ϋϥε
25. $BLF
    1BUUFSOͷ4XJGU࣮૷ ͭͷ໾ׂΛ࣋ͭϓϩτίϧ΍ΫϥεΛ࡞Δ
    
    ґଘର৅ͷϓϩτίϧͱͦͷ࣮૷ίʔυ
    
    ґଘ͢Δͱ͍͏ͷΛఆٛͨ͠ϓϩτίϧ
    
    ґଘΛ·ͱΊ্ͨҐϨΠϠͷϓϩτίϧ
    
    ґଘղܾʹಛԽͨ͠Ϋϥε Λ্ҐͷϨΠϠͰར༻͠ɺͦ͜Ͱಉ͡΋ͷΛ࡞͍ͬͯ ͖ɺߋʹ্ҐͷϨΠϠͰʜͱ͍͏ͷΛ܁Γฦ͢
26. ґଘର৅ͷϓϩτίϧͱͦͷ࣮૷ίʔυ
27. ґଘର৅ͷϓϩτίϧͱͦͷ࣮૷ίʔυ ґଘର৅ͷϓϩτίϧ
28. ґଘର৅ͷϓϩτίϧͱͦͷ࣮૷ίʔυ ͦͷ࣮૷ίʔυ
29. 
    ґଘ͢Δͱ͍͏ͷΛఆٛͨ͠ϓϩτίϧ
30. 
    ґଘ͢Δͱ͍͏ͷΛఆٛͨ͠ϓϩτίϧ ʮͦͷϓϩτίϧΛ
    ϓϩύςΟͱͯ࣋ͬͯ͠ ͍Δʯͱ͍͏͜ͱΛఆٛ ͨ͠ϓϩτίϧ
31. 
    ґଘΛ·ͱΊ্ͨҐϨΠϠͷϓϩτίϧ
32. 
    ґଘΛ·ͱΊ্ͨҐϨΠϠͷϓϩτίϧ Կʹґଘ͢Δ͔Λఆ ্ٛͨ͠ҐϨΠϠͷ ϓϩτίϧ
33. 
    ґଘΛ·ͱΊ্ͨҐϨΠϠͷϓϩτίϧ ͦͷґଘΛ࢖ͬͨ
    ॲཧͷ࣮૷
34. 
    ґଘղܾʹಛԽͨ͠Ϋϥε Ͱ࡞࣮ͬͨ૷ͷ஫ ೖΛهड़ͨ͠Ϋϥε
35. 
    ґଘղܾʹಛԽͨ͠Ϋϥε ߋʹͦΕʹґଘ͢Δͱ͍ ͏͜ͱΛఆٛͨ͠
    ϓϩτίϧΛ༻ҙͯ͠
    ্ҐϨΠϠͰ࢖͏ʜ
36. ৄࡉͳίʔυ IUUQTHPPHM-W/IL
37. ॴײ w ཁ͢Δʹ1SPUPDPMͷίϯϙδγϣϯͰґଘఆٛɾ ొ࿥Λ͍ͯ͘͠ γϯϓϧ
    w $BLF
    1BUUFSO΋Ͳ͖ͷΈͰ࣮຿ͷ։ൃ΁ແཧͳ ͘ಋೖͰ͖Δ͔ࣗ৴͸࣋ͯͳ͍
    w ϓϩτίϧ਺͕Ұؾʹ૿͑ͯແବͳෳࡶ͕͞ൃ ੜͦ͠͏
38. ࣗ෼ͷதͰͷ݁࿦ w ຊ౰ʹඞཁͳͱ͜Ζ͔Β%*Խ͍ͯ͘͠ͱ͍͏ͷ ͕ແ೉͔΋
    w ஈ֊తͳ%*Λߦ͏खஈͱͯ͠$BLF
    1BUUFSO΋Ͳ ͖Λ࢖͍ͬͯ͘ͷ͕ྑͦ͞͏
39. ࢀߟࢿྉ w 4XJOKFDU
    w IUUQTHJUIVCDPN4XJOKFDU4XJOKFDU
    w %FQFOEFODZ
    *OKFDUJPO
    JO
    1SBDUJDF
    w IUUQTTQFBLFSEFDLDPNZPJDIJUHZEFQFOEFODZJOKFDUJPOJOQSBDUJDFJPTDPO
    w *OWFSTJPO
    PG
    $POUSPM
    $POUBJOFST
    BOE
    UIF
    %FQFOEFODZ
    *OKFDUJPO
    QBUUFSO
    
    w IUUQTNBSUJOGPXMFSDPNBSUJDMFTJOKFDUJPOIUNM
    w .JOJNBM
    $BLF
    1BUUFSO
    JO
    4XJGU
    w IUUQTXXXTMJEFTIBSFOFU@ZZV@NJOJNBMDBLFQBUUFSOJOTXJGU
    w 6TJOH
    QSPUPDPM
    DPNQPTJUJPO
    GPS
    EFQFOEFODZ
    JOKFDUJPO
    w IUUQNFSPXJOHJOGPVTJOHQSPUPDPMDPNQPTJUPOGPSEFQFOEFODZJOKFDUJPO
40. ࣍ճ༧ࠂ w ʮ࣮૷ֶͯ͠ͿϦΞΫςΟϒϓϩάϥϛϯάʯͱ ͍͏λΠτϧͰൃද͍ͨ͠ͱࢥ͍·͢