iOSDC 2017 in Tokyo, September 16-17, 2017 https://iosdc.jp/2017/node/1482
!ZPJDIJUHZϞόΠϧΞϓϦͰࠔΒͳ͍ΤϥʔϋϯυϦϯάͱϩΪϯάͷϕετϓϥΫςΟεଟլ୩ ༸ҰiOSDC JAPAN 2017
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!ZPJDIJUHZࣗݾհ ʙ ଟլ୩ ༸Ұ• Swinject (Dependency Injection Framework) ͷ࡞ऀ‣ ଟͷϓϩμΫγϣϯ࠾༻‣ GitHubελʔ: ͏͙͢2000• ϝϧΧϦͷiOSΤϯδχΞ‣ ओʹΞϝϦΧ൛ΞϓϦΛ୲‣ 9/30 () Mercari Tech Conf 2017ͰDIͷΛ͠·͢J04%$ͰlίʔυੜʹΑΔ੩తͳ%FQFOEFODZ*OKFDUJPOzCZ!JTILBXBPO4FQ
!ZPJDIJUHZ•ɹΤϯδχΞͷεΩϧ•ɹίʔυϨϏϡʔ•ɹϢχοτςετ•ɹ6*ࣗಈςετ•ɹखಈςετ•ɹΤϥʔϩάࠓͷΞϓϦͷ্࣭ʹඞཁͳ͜ͱ
!ZPJDIJUHZ͜Μͳͷݟͨ͜ͱ͋Γ·ͤΜ͔ʁΫϥογϡͰ1ˑϨϏϡʔͷཛྷ࠶ݱ͠ͳ͍Ͳ͏͢Ε͍͍͔͔Βͳ͍ΞϓϦΛόʔδϣϯΞοϓͨ͠
!ZPJDIJUHZΫϥογϡϩάͱ͍͑
!ZPJDIJUHZCrashlyticsIUUQTXXXGBCSJDJP$SBTIMZUJDTΛਂ͘୳ͬͯΈΑ͏
!ZPJDIJUHZCrashlyticsͰҰ൪ॏཁͳ͜ͱIUUQTEPDTGBCSJDJPBQQMFDSBTIMZUJDTUFTUDSBTIIUNMUSPVCMFTIPPUJOHfunc application(_ application: UIApplication,didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {Fabric.with([Crashlytics.self])return true}ϩάΫϥογϡޙʹΞϓϦ͕࠶ىಈͨ࣌͠ʹૹΒΕΔapplication:didFinishLaunchingWithOptionsΛແࣄʹ௨ա͠ͳ͍ͱμϝ
!ZPJDIJUHZىಈ࣌application:didFinishLaunchingWithOptionsͰͦ͠͏ͳ͜ͱ• ֤छϑϨʔϜϫʔΫͷॳظԽ•ɹ%BUBCBTFͷϚΠάϨʔγϣϯ•ɹΩϟογϡͷΫϦΞϝΠϯεϨουΛ࣌ؒࢭΊͳ͍
!ZPJDIJUHZಛʹґଘϥΠϒϥϦʹҙIUUQTHJUIVCDPNQJOUFSFTU1*/3FNPUF*NBHFJTTVFT1*/3FNPUF*NBHFࣗମ͍͍ϥΠϒϥϦͰ͢
!ZPJDIJUHZͦΕͰ
!ZPJDIJUHZCrashlyticsͬͯΠϯετʔϧ͢ΔҎ֎ʹԿ͔ඞཁͳͷʁ
!ZPJDIJUHZCrashlyticsʹศརͳՃใ͕͋Δ
!ZPJDIJUHZϢʔβใͷՃγϯάϧτϯϝιου આ໌TFU6TFS*EFOUJpFS @ 6TFS*EΛઃఆ͢ΔTFU6TFS&NBJM @&NBJMΛઃఆ͢Δ6TFS*E͕͋Εී௨ෆཁTFU6TFS/BNF @Ϣʔβͷ໊લΛઃఆ͢Δ6TFS*E͕͋Εී௨ෆཁ ΧελϚʔαϙʔτͷใ͔ΒௐΔ࣌ʹศར &NBJMͱϢʔβͷ໊લ໌Β͔ͳݸਓใͳͷͰҙ
!ZPJDIJUHZKey/ValueͷՃγϯάϧτϯϝιου આ໌TFU0CKFDU7BMVF @GPS,FZ 4USJOHͳͲΛ,FZʹରͯ͠ઃఆ͢ΔTFU#PPM7BMVF @GPS,FZ #PPMΛ,FZʹରͯ͠ઃఆ͢ΔTFU*OU7BMVF @GPS,FZ *OUΛ,FZʹରͯ͠ઃఆ͢ΔTFU'MPBU7BMVF @GPS,FZ 'MPBUΛ,FZʹରͯ͠ઃఆ͢Δ 3FNPUF$POpH "#5FTU %PXOMPBEͨ͠Ϧιʔε+4ͷ7FSTJPOʹ ࠷େݸͷ,FZ·Ͱͭͷ,FZ7BMVF͕,#·Ͱ ,FZ͕ͨ͘͞ΜඞཁͳΒ+40/จࣈྻʹ͢Δ͜ͱݕ౼
!ZPJDIJUHZΧελϜϩάͷՃؔ આ໌$-4-PHW @GPSNBU BSHT Ϋϥογϡൃੜલͷϩά͕Ϋϥογϡʹඥ͚ΒΕΔ ΫϥογϡͷݪҼʹͳΔલͷಈ࡞͕Θ͔Δ ϩά࠷େ,# ߦจࣈ͘Β͍ͳΒߦ͘Β͍ ͋;ΕͨΒݹ͍ͷ͔Βফ͞ΕΔ Ϣʔβߦಈ Πϕϯτͷϩά"OTXFST'JSFCBTFͳͲΛ͏
!ZPJDIJUHZඇΫϥογϡͷϨϙʔτΛՃγϯάϧτϯϝιου આ໌SFDPSE&SSPS @ॏେͳΤϥʔͰϩάΤϯτϦʔΛ࡞ΔϨϙʔτ/PO'BUBMTάϧʔϓʹ·ͱΊΒΕΔΞϓϦ࠶ىಈ࣌ʹ$SBTIMZUJDTʹૹ৴͞ΕΔ Ϋϥογϡ͠ͳ͍͕ॏେͳΤϥʔΛ$SBTIMZUJDTͰ֬ೝͰ͖Δ ϩάʹΔͷΞϓϦ࠶ىಈ·Ͱͷ࠷େݸͷΤϥʔ·Ͱ $16ίετ͕͔͔ΔͷͰΦϒβʔόʔޮՌʹҙ %8"3' %FCVH8JUI"UUSJCVUFE3FDPSE'PSNBUVOXJOEJOH
!ZPJDIJUHZCrashlyticsΛOSLogͱΈ߹Θͤͯࣗ࡞ͷϩΨʔΛ࡞Γ·͢
!ZPJDIJUHZOSLog/os_logvar osLog = OSLog(subsystem: “com.my-company.LoggingSample",category: “ViewModel”)os_log(“Hello world!”, log: osLog, type: .default)͍ํJ04͔Β͑ΔΑ͏ʹͳͬͨϩάͷΈ
!ZPJDIJUHZOSLogTypeIUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOPTMPHHJOHϩάϨϕϧ อଘઌ ಛEFCVH ͳ͠ σόοά༻JOGP ϝϞϦʔ όοϑΝʔ͕͍ͬͺ͍ʹͳͬͨΒফ͑Δ Τϥʔ͕ى͖ͨ߹อଘ͞ΕΔEFGBVMU ετϨʔδ ࠷ॳόοϑΝʔʹอଘ͞ΕΔ ͍ͬͺ͍ʹͳͬͨΒετϨʔδʹҠ͞ΕΔFSSPS ετϨʔδ ϓϩηεͷΤϥʔͰ͏GBVMU ετϨʔδ ෳϓϩηε͕ؔΘΔΤϥʔͰ͏
!ZPJDIJUHZConsole App IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED IUUQTNFEJVNDPN!BCKVSBUPVOJpFEMPHHJOHBOEBDUJWJUZUSBDJOHBB⒎FGC• "DUJWJUZ5SBDJOHͱΈ߹ΘͤΔͱศར• ෳϓϩηε͕ؔΘΔΞϓϦͷσόοάͰศརw .BD"QQw 8BUDI"QQ• ݱঢ়4XJGU͔Β͑ͳ͍w ͏ʹԼͷϦϯΫࢀর
!ZPJDIJUHZ͔͠͠ͳ͕Βࠓճγϯϓϧͳ༻๏ʹཹΊ·͢#$SBTIMZUJDT͚ͩͰेڧྗ
!ZPJDIJUHZࣗ࡞ϩΨʔͷϩάϨϕϧϩάϨϕϧ ༻్ ॲཧEFCVH%FCVH࣌ʹ͚ͩݟ͍ͨใ $POTPMFʹͷΈग़ྗJOGP"1*ίʔϧτϨʔε $POTPMFͱ$-4-PHWͷग़ྗFSSPSϋϯυϦϯάՄೳͳΤϥʔ $POTPMFͱ$-4-PHWͷग़ྗ $-4-PHWͷϝοηʔδݕࡧੑΛ্͛ΔGBUBM ఆ֎ͷΤϥʔ $POTPMFʹग़ྗ SFDPSE&SSPSͰ$SBTIMZUJDTͷϨϙʔτΤϯτϦʔΛ࡞Δ BTTFSUJPO'BJMVSFೖΕͯ%FCVHϏϧυͰམͪΔΑ͏ʹ͢Δ
!ZPJDIJUHZLogΫϥεfinal class Log {static func debug(message: String) {os_log("⚒%@", type: .debug, message)}static func info(message: String) {os_log("ℹ%@", type: .debug, message)CLSLogv("%@", getVaList([message]))}static func error(message: String) {os_log("❗%@", type: .debug, message)CLSLogv("[Error] %@", getVaList([message]))}}
!ZPJDIJUHZLogΫϥεfinal class Log {static func fatal(message: String,file: String = #file,function: String = #function, line: Int = #line) {os_log("%@", log: .default, type: .debug, message)let fileName = file.components(separatedBy: "/").last ?? ""let error = NSError(domain: "\(fileName):\(function)",code: line,userInfo: ["message": message])Crashlytics.sharedInstance().recordError(error)assertionFailure(message)}}
!ZPJDIJUHZfinal class Log {static func error(error: Error) {let message = String(reflecting: error)os_log("❗%@", log: .default, type: .debug, message)CLSLogv("[Error] %@", getVaList([message]))}static func fatal(error: Error) {let message = String(reflecting: error)os_log("%@", log: .default, type: .debug, message)Crashlytics.sharedInstance().recordError(error as NSError)assertionFailure(message)}}LogΫϥε
!ZPJDIJUHZDemo -PHTXJGUIUUQTHJTUHJUIVCDPNZPJDIJUHZBEBBEFGFBBCB "QQ%FMFHBUFTXJGUIUUQTHJTUHJUIVCDPNZPJDIJUHZFEBGBCGFCFBCDF 7JFX$POUSPMMFSTXJGUIUUQTHJTUHJUIVCDPNZPJDIJUHZFCBFGEECBBD
!ZPJDIJUHZDemoͨ͜͠ͱ
!ZPJDIJUHZguard let something = something else {// Swallowreturn}guard !array.isEmpty else {// Swallowreturn}guard let something = something else {Log.fatal(message: "something is nil unexpectedly.")return}guard !array.isEmpty else {Log.fatal(message: "array is empty.")return}࠷ޙʹෆਖ਼ͳঢ়ଶΛҿΈࠐΜͰ͍ͨΒ࠷ѱͰϩάΛૹ͓ͬͯ͜͏ݱࡏͷ࣮Ͱ͋Γ͑ͳͯ͘কདྷͷόάΛݕ͢ΔͨΊ
!ZPJDIJUHZ%BUF 4QFBLFS 5JUMF !UFOOUFOO (PʹΑΔJ04ΞϓϦͷ։ൃ !DIVHBO[Z ϝϧΧϦͰ࣮ࢪͨ͠աڈ࠷େنͷ"#ςετʮυϩϫʔWTԼλϒʯͷཪ !LJUBTVLF *OUSPEVDJOHQSPUPCVGJO4XJGU !KBSJOPTVLF 64൛.FSDBSJΛ·Δ͝ͱ͔Β࡞Γͨ͠ !NPUPLJFF ݁ࠗࣜΛࢧٕ͑ͨज़'JSFCBTFΛ׆༻ͨ͠αʔόϨεJ04ΞϓϦέʔγϣϯ։ൃ !EUWE ϝϧΧϦΞοςΛࢧ͑ΔΦʔτϚτϯ !KPMMZKPFTUFSཔΉ͔Βϓογϡ௨ͷ͍ํΛ͓Ζ͔ͦʹ͠ͳ͍Ͱ͘Εʂʙϓογϡ௨ͷදݱɺྺ࢙ɺ࠷৽ಈ·ͰʙThank you.PSFGSPN BUJ04%$
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