4000のワーニングと戦え！これは警告だ！ / 4000 Warnings

Transcript

1. ͷϫʔχϯάͱઓ͑ ʂ 
 ͜Ε͸ܯࠂͩ ʂ 
   .PCJMF
   "DU
   04","
   
2. ࣗݾ঺հ w ͻΖΜʢҰٶ
   ߒڭʣ
   w 5XJUUFS
   (JU)VC
   2JJUB 
 4MJEF4IBSF
   4QFBLFS
   %FDL

   
   
   
   ˠ
   IJSPOZUJD
   w גࣜձࣾ
   .FUB.P+Jʢಙౡۈ຿ʣ
3. ࠓ೥ͷग़དྷࣄ IUUQTNPOFZGPSXBSEDPNFOHJOFFST@CMPHPQUJPOBM
4. ࠓ೥ͷग़དྷࣄ ඇৗʹେ͖ͳαΠζͷ
   13
   Ͱ͋ͬͨ͜ͱ΍ɺഁյతมߋ͕ߦΘΕͨ
   4XJGU
   
   ΁ͷରԠͩͬͨ͜ͱɺͦ΋ ͦ΋ݹ͔͘Βӡ༻͞Ε͍ͯΔϓϩμΫτͰ͋Δ͕Ώ͑ͷେྔͷܯࠂΛશͯ௵͖͠Ε͓ͯΒͣɺͦͷ·· ຒ΋Εͯ͠·ͬͨͱ͔͠ݴ͍Α͏͕ͳ͘ɺͱͯ΋ஏ͔͍ͣ͠ݶΓͰ͢ɻ IUUQTNPOFZGPSXBSEDPNFOHJOFFST@CMPHPQUJPOBM
5. ࠓ೥ͷग़དྷࣄ ඇৗʹେ͖ͳαΠζͷ
   13
   Ͱ͋ͬͨ͜ͱ΍ɺഁյతมߋ͕ߦΘΕͨ
   4XJGU
   
   ΁ͷରԠͩͬͨ͜ͱɺͦ΋ ͦ΋ݹ͔͘Βӡ༻͞Ε͍ͯΔϓϩμΫτͰ͋Δ͕Ώ͑ͷେྔͷܯࠂΛશͯ௵͖͠Ε͓ͯΒͣɺͦͷ·· ຒ΋Εͯ͠·ͬͨͱ͔͠ݴ͍Α͏͕ͳ͘ɺͱͯ΋ஏ͔͍ͣ͠ݶΓͰ͢ɻ IUUQTNPOFZGPSXBSEDPNFOHJOFFST@CMPHPQUJPOBM
6. Θ͔Δʙ
7. w ࣮͸͜ͷ͜ΖɺฐࣾͷϓϩμΫτ΋
 ܯࠂ͕࢒ͬͨ··ʹͳ͍ͬͯͨ
 ʢͨͩ͠ɺ0CKFDUJWF$ʣ
   w Ұ౓͸ܯࠂΛ΄΅θϩʹ͍ͯͨ͠ͷ͕ͩɺ
 9DPEFͷόʔδϣϯΞοϓΛڥʹɺ
 ͍ͭͷؒʹ΍Β૿͍͑ͯͨʢݸʣ
8. IUUQTUXJUUFSDPN@NPOPTUBUVT
9. ͦͷ௨Γͩʜʂ
10. ͬͦ͘͞ܯࠂআڈʹͱΓ͔͔Δ ͱ͸͍͑
    w ܯࠂআڈ͚ͩߦ͏·ͱ·ͬͨ࡞ۀظؒ͸֬อͰ͖ ͦ͏ʹͳ͍ͷͰɺ߹ؒͰͪΐͪ͜ΐ͜࡞ۀ
    w νʔϜϝϯόʔؒͷԹ౓ࠩ ܯࠂআڈΛ੝Γ্͛Δඞཁ͋Γʂ
11. 4MBDLʹνϟϯωϧΛ࡞ͬͨ
12. ܯࠂ਺ͷભҠΛՄࢹԽ
13. ܯࠂΛফͬͯ͢Ͳ͏͍͏͜ͱʁ w ܯࠂ
    ˠ
    จ๏తʹ͸ؒҧ͍ͬͯͳ͍͕ɺϓϩάϥ ϜϛεͷՄೳੑ͕͋Δ෦෼ͷࢦఠ
    w ܯࠂΛফ͢
    ˠ
    ໰୊͕͋Ε͹मਖ਼͢Δɻ
 ͳ͚Ε͹ͦ͜ʹ໰୊͕ͳ͍͜ͱΛҙࢥදࣔ͢Δɻ
14. ҙࢥදࣔͷྫ UISwitch *hideSw = ... if (!hideSw.on != [defaults boolForKey:@"visible"]) { ... } if (!(hideSw.on != [defaults boolForKey:@"visible"])) ͷؒҧ͍͡Όͳ͍ͷʁͬͯ৺഑͞Ε͍ͯΔ Logical not is only applied to the left hand side of this comparison ˞9DPEF
    Ͱ͸͜ͷྫͰ͸ܯࠂ͕ग़·ͤΜͰͨ͠ UISwitch *hideSw = ... if ((!hideSw.on) != [defaults boolForKey:@"visible"]) { ... } ɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹɹʜͷͰ
    ΧοίΛ͚ͭͯͦ͏͡Όͳ͍ͱҙࢥදࣔ
15. ॱௐʹܯࠂ਺ΛݮΒ͍ͯͨ͠ͷ͕ͩʜ
16. 9DPEF
    ΁Ξοϓσʔτ
17. 9DPEF
    ΁Ξοϓσʔτ ܯࠂ਺͕
    
    Λ௒͑ͨʂ Χϯετ
18. *NQMJDJU
    SFUBJO
    PG
    TFMG
    XJUIJO
    CMPDLT w self
    ͕҉໧తʹڧࢀর͞ΕΔΑɺͱ͍͏ܯࠂ
    w ΫϥεͷΠϯελϯεม਺ΛϒϩοΫͷதͰࢀর ͍ͯ͠Δͱ͜ΖͰग़Δ
    w ॥؀ࢀরͷૣظݕग़ʹ໾ཱͭ
19. *NQMJDJU
    SFUBJO
    PG
    TFMG
    XJUIJO
    CMPDLT @interface ViewController : UIViewController { WaitView *_waitView; } ... @end ΫϥεͷΠϯελϯεม਺ ˞ݱࡏ͸ɺΠϯελϯεม਺͸࢖Θͣʹɺ
 ϓϩύςΟΛ࢖͏͜ͱ͕ਪ঑͞Ε͍ͯ·͢ɻ
20. *NQMJDJU
    SFUBJO
    PG
    TFMG
    XJUIJO
    CMPDLT [AsyncUtils performActionOnMainThread:^{ _waitView.hidden = NO; }]; ϒϩοΫͷதͰ
 Πϯελϯεม਺Λࢀর _waitView
    ͕ڧࢀর͞ΕΔͷͰ͸ͳͯ͘ɺ
 self
    ͕ڧࢀর͞ΕΔ [AsyncUtils performActionOnMainThread:^{ self->_waitView.hidden = NO; }]; self->
    Λิ͑͹ɺҙࢥ දࣔʹΑΓܯࠂΛফͤΔ
21. ͳͥ݅΋ w 6*εϨουͰಉظతʹ࣮ߦ͢ΔϢʔςΟϦςΟϝ ιουΛ࡞͍ͬͯͨʢ4XJGUͳΒ
    @noescapeʣ
    w ίϯύΠϥ͕ಉظత͔Ͳ͏͔Θ͔Βͳ͍ͷͰɺ͢ ΂ͯܯࠂ͕ग़Δ
    w ͬ͟ͱݟͯɺͱ͘ʹ໰୊ͳ͍Օॴ͕ଟ͍
22. ͜ͷܯࠂɺͲ͏ղܾ͢Δ͔ʁ "Ҋ
    
    ໛ൣతͳղܾࡦʢ݅΋ͳ͚Ε͹ʣ
    w ܯࠂ͕ग़͍ͯΔՕॴΛਓ͕ؒݟͯ
 ໰୊͕ͳ͚Ε͹
    self->
    Λิ͏
    w ղܾʹ͕͔͔࣌ؒΓ͗ͯ͢ɺ
 େྔͷܯࠂঢ়ଶ͕͋ͨΓ·͑ʹͳͬͯ͠·͏৺഑
23. ͜ͷܯࠂɺͲ͏ղܾ͢Δ͔ʁ #Ҋ
    
    ͜ͷܯࠂ͸ࣺͯΔ
    w ϓϩδΣΫτઃఆͰ*NQMJDJU
    SFUBJO
    PG
    TFMG
    XJUIJO
    CMPDLTͷܯࠂΛ
    /P
    ʹ͢Δ
    w ࠓޙ࣮૷͢Δ෦෼Ͱ΋ܯࠂ͕ग़ͳ͍
24. ͜ͷܯࠂɺͲ͏ղܾ͢Δ͔ʁ $Ҋ
    
    ैདྷͷίʔυʹ͸໨ΛᛉΔ
    w ద౰ͳεΫϦϓτΛॻ͍ͯɺ
 ܯࠂ͕ग़͍ͯΔͱ͜Ζʹػցతʹ
    TFMG
    Λิ͏
    w ҙࢥදࣔͨ͜͠ͱʹͳΓɺ͜Ε͸ਖ਼͍͠ͱ͍͏
 ʮ͓๽෇͖ʯΛ༩͑ͯ͠·͏͜ͱʹͳΔ
    w ࠓޙͷ࣮૷Ͱ͸ܯࠂ͕ػೳ͢Δ
25. ͜ͷܯࠂɺͲ͏ղܾ͔ͨ͠ʁ w "Ҋͱ$Ҋͷ྆ํΛ෦෼࠾༻ͨ͠ɻ
    w ֬ೝ͢Δҙࢥͷ͋Δ୲౰ऀʹ͸֬ೝͯ͠΋Βͬͯ खಈͰ
    self->
    Λิͬͯ΋Β͏ɻ
    w ͦΕҎ֎ͷ෦෼͸ɺػցతʹ
    self->
    Λิ͏ɻ ʢΑ͘ͳ͍͜ͱͱೝ্ࣝͨ͠Ͱ૬ஊͷ݁Ռʣ
26. ͦΜͳ͜Μͳ
 ͋ͬͯ
27. ܯࠂ਺
    
    ʹ౸ୡ
    
28. ͦͷޙͷܯࠂΛ૿΍͞ͳ͍ͨΊʹ w ܯࠂΛΤϥʔѻ͍ʹ͢Δʁ
 ʢ5SFBU
    8BSOJOHT
    BT
    &SSPST
    Λ
    :FT
    ʹʣ
    ‎σόοά࣌ʹ൥Θ͍͠ͷͰ͸ʁ
    w $*ͰͷϏϧυ࣌ʹݶΓɺܯࠂΛΤϥʔѻ͍ʹ
    w ܯࠂΛग़ͨ͠··ʹ͢Δͱ$*ʹౖΒΕΔ
29. ·ͱΊ w ܯࠂআڈͷϞνϕʔγϣϯΞοϓઓུ
    w ܯࠂΛফ͢ͱ͸ʁ
    ˠ
    ίʔυʹର͢Δҙࢥදࣔ
    w 9DPEFͷόʔδϣϯΞοϓʹ൐͏݅ͷܯࠂ
 ϝϦοτɾσϝϦοτΛݕ౼ͯ͠ରॲ
    w ܯࠂΛ૿΍͞ͳ͍ͨΊͷ޻෉
30. IUUQTUPLVTIJNBBQQDPOOQBTTDPNFWFOU ݄೔ʹ͸ୈճΛ༧ఆʂ