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なぜ誰もこう書いてくれない Dependency Injection
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Koji Saiki
October 15, 2017
Programming
5
1.8k
なぜ誰もこう書いてくれない Dependency Injection
Koji Saiki
October 15, 2017
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Transcript
ͳͥ୭͜͏ॻ͍ͯ͘Εͳ͍ %FQFOEFODZ*OKFDUJPOೖ 2017/10/5
ࣗݾհ ! ͓ͳ·͑ɿࠤഢߛೋʢ͍͖͜͞͏͡ʣ ! ͱ͜ΖɿԬɾେࡕ ! ͭͿ͖ɿIUUQTUXJUUFSDPNTBJLPV ! ͿɿIUUQTHJUIVCDPNLPKJTBJLJ !
ͿΖ͙ɿIUUQJSPOZIBUFOBCMPHDPN
ɹ%FQFOEFODZ*OKFDUJPOɺґଘੑೖʜ ɹཧղ͍ͨ͠Ͱ͢ΑͶɻ
ʮͦ͜4FSWJDF$MBTTͷ*OTUBODFΛ ɹ*OKFDU͢ΕҰൃͰ͢Αɻʯ ɹͱ͔ݴ͍͍ͨͰ͢ΑͶɻ
ɹ·ͣ͜ΕΛ಄ʹୟ͖ࠐΜͰ͍ͩ͘͞ɻ
ʮ%FQFOEFODZ*OKFDUJPOʯͱ͍͏໊લ͔Β ɹػೳΛཧղ͢Δ͜ͱͰ͖·ͤΜʂʂʂ
z%*z͔Βਪଌ͢Δ͜ͱlෆՄೳzͰ͢ ! %FQFOEFODZ*OKFDUJPO ! ຊޠʹ༁͢Δͱʮґଘੑೖʯ ! ͔͜͜ΒೖΔͱཧղͰ͖·ͤΜ
͜ΕΘ͔Γ·͔͢ʁ
͜ΕΘ͔Γ·͔͢ʁ ! 0CKFDU0SJFOUFE1SPHSBNNJOH
͜ΕΘ͔Γ·͔͢ʁ ! 0CKFDU0SJFOUFE1SPHSBNNJOH ! .JTTJPO$POUSPM
͜ΕΘ͔Γ·͔͢ʁ ! 0CKFDU0SJFOUFE1SPHSBNNJOH ! .JTTJPO$POUSPM ! ӡ໋ͱ͍͏໊ͷ31( ! Ӭԕͱឺͷ13( !
܅ͱڹ͖͋͏31(
͜ΕΘ͔Γ·͔͢ʁ ! 0CKFDU0SJFOUFE1SPHSBNNJOH ! .JTTJPO$POUSPM ! ӡ໋ͱ͍͏໊ͷ31( ! Ӭԕͱឺͷ13( !
܅ͱڹ͖͋͏31( ! %FQFOEFODZ*OKFDUJPOOFX
ɹ͖͋ΒΊΑ͏
Ұ୴ɺ໊લΛΕ·͠ΐ͏ ! ਖ਼໊ࣜশͱ͔ຊޠͱ͔Εͯɺʮ%*ʯԿΛ͢Δͷʁͱ͍͏ͱ͜Ζ͔Βೖ Δͷ͕l࣮֬z
͡Ό͋ʮ%*ʯԿΛ͢Δͷʁ ! ུশɾਖ਼໊ࣜশΛҙࣝͤͣɺతɾୡ͍ͨ͜͠ͱΛཧղ͠·͠ΐ͏ ! ڭՊॻɿʮ࡞ͬͯཧղ͢Δ%*ίϯςφʯ IUUQEIBUFOBOFKQOPXPLBZ ! ͖ͩ͠͞Μ͕͢͞Ͱ͢
! هࣄͷཁͳͲ͍ͯ͠·ͤΜɻ͔͋͠Βͣɻ
͍ͭ͜ʹͯ͠΄͍͜͠ͱ
͍ͭ͜ʹͯ͠΄͍͜͠ͱ ! ཉ͍͠ΦϒδΣΫτʢΠϯελϯεʣΛ༻ҙͯ͘͠ΕΔ
͍ͭ͜ʹͯ͠΄͍͜͠ͱ ! ཉ͍͠ΦϒδΣΫτʢΠϯελϯεʣΛ༻ҙͯ͘͠ΕΔ ! Ұੜ͞ΕͨΦϒδΣΫτΛอ͓͍ͯͯ͘͠ΕΔ
͍ͭ͜ʹͯ͠΄͍͜͠ͱ ! ཉ͍͠ΦϒδΣΫτʢΠϯελϯεʣΛ༻ҙͯ͘͠ΕΔ ! Ұੜ͞ΕͨΦϒδΣΫτΛอ͓͍ͯͯ͘͠ΕΔ ! γϯάϧτϯΠϯελϯε͘ΕΔ
͍ͭ͜ʹͯ͠΄͍͜͠ͱ ! ཉ͍͠ΦϒδΣΫτʢΠϯελϯεʣΛ༻ҙͯ͘͠ΕΔ ! Ұੜ͞ΕͨΦϒδΣΫτΛอ͓͍ͯͯ͘͠ΕΔ ! γϯάϧτϯΠϯελϯε͘ΕΔ ! ςετͷͱ͖ɺςετ༻ͷΦϒδΣΫτͱखܰʹΓସ͑ͯ͘ΕΔ
ɹͭ·Γɺ ʮ͍͍ײ͡ʹΦϒδΣΫτΛ͘ΕΔͭʯ ɹͰ͢ɻ
͡Ό͋ɺͦΖͦΖΠέͯΔ໊લ͚ͭΔ͔ ! .BSUJOʮϓϩάϥϜΦϒδΣΫτΛͬͯಈ࡞͍ͯ͠ΔɻͦΕΛదʹࠩ͠ ࠐΜͰ΄͍͠ɻʯ
͡Ό͋ɺͦΖͦΖΠέͯΔ໊લ͚ͭΔ͔ ! .BSUJOʮϓϩάϥϜΦϒδΣΫτΛͬͯಈ࡞͍ͯ͠ΔɻͦΕΛదʹࠩ͠ ࠐΜͰ΄͍͠ɻʯ ! .BSUJOʮͭ·ΓzґଘੑzͷzೖzͶɻʯ
͡Ό͋ɺͦΖͦΖΠέͯΔ໊લ͚ͭΔ͔ ! .BSUJOʮϓϩάϥϜΦϒδΣΫτΛͬͯಈ࡞͍ͯ͠ΔɻͦΕΛదʹࠩ͠ ࠐΜͰ΄͍͠ɻʯ ! .BSUJOʮͭ·ΓzґଘੑzͷzೖzͶɻʯ ! .BSUJOʮͰ͢Ͷɻʯ ! Զʮʁʁʁʯ
ɹɹɹɹʊਓਓਓਓਓਓਓਓਓਓਓਓʊ ɹɹɹɹʼɹ%FQFOEFODZ*OKFDUJPOɹʻ ɹɹɹɹʉ:?:?:?:?:?:?:?:?:?:?:ʉ
͡Ό͋ɺͦΖͦΖΠέͯΔ໊લ͚ͭΔ͔ ! .BSUJOʮ%*ΛΒͤΔϓϩάϥϜʹͳΜ໊ͯલΛ͚ͭΑ͏ʁʯ
͡Ό͋ɺͦΖͦΖΠέͯΔ໊લ͚ͭΔ͔ ! .BSUJOʮ%*ΛΒͤΔϓϩάϥϜʹͳΜ໊ͯલΛ͚ͭΑ͏ʁʯ ! .BSUJOʮͷղऍͩͱ͜ΕzίϯςφzͳΜͩΑͶɻΦϒδΣΫτΛఏڙ͠ͳ ͕ΒɺϒϥοΫϘοΫεͰͪΌΜͱࣄΛ͜ͳͯ͘͠ΕΔΞΫλʔɻʯ
͡Ό͋ɺͦΖͦΖΠέͯΔ໊લ͚ͭΔ͔ ! .BSUJOʮ%*ΛΒͤΔϓϩάϥϜʹͳΜ໊ͯલΛ͚ͭΑ͏ʁʯ ! .BSUJOʮͷղऍͩͱ͜ΕzίϯςφzͳΜͩΑͶɻΦϒδΣΫτΛఏڙ͠ͳ ͕ΒɺϒϥοΫϘοΫεͰͪΌΜͱࣄΛ͜ͳͯ͘͠ΕΔΞΫλʔɻʯ ! .BSUJOʮz%*ͷΛෛ͏ίϯςφzͶɻʯ ! Զʮʁʁʁʁʁʁʯ
ɹɹɹɹɹʊਓਓਓਓਓਓਓʊ ɹɹɹɹɹʼɹ%*ίϯςφɹʻ ɹɹɹɹɹʉ:?:?:?:?:?:ʉ
ɹ͖͋ΒΊΑ͏
ɹͪΐͬͱ͕Μͬͯߟ͑Δͱɺ ɹ%*ίϯςφͷzίϯςφzͬͯɾɾɾ
͜͏͡Όͳͯ͘
͜͏ʁ
Ͱɺ͜͏ʁ ΦϒδΣΫτ Πϯελϯε γϯάϧτϯ औΓἧ͑ͯ·͢ʂ ΦʔμʔϝΠυ ঝΓ·͢ʂ
·ͱΊ ! z%FQFOEFODZ*OKFDUJPOzɺzґଘੑೖzͱ͍͏ݴ༿ΕͯɺతΛΓ·͠ ΐ͏ɻ֮ͦͯͬͯ͑͠·͠ΐ͏ɻ ! z%*ίϯςφzʮ%*ͷׂΛ୲͏ϓϩάϥϜʯఔʹΏΔ֮͑͘·͠ΐ͏ɻ ! ͖ͩ͠ͳ͓͖ɹ͞Μɺ͍Β͢ͱɹ͞Μɺແஅ༻Ͱࣦྱ͠·͢N @@ N
͓ΘΓ kojisaiki/saikou9901