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How Developer Support Works
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Naoki Ainoya
March 11, 2017
Programming
10
2.6k
How Developer Support Works
「開発支援という仕事」
Battle Conference U30 登壇資料
https://battleconference-u30.connpass.com/event/49985/
Naoki Ainoya
March 11, 2017
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Transcript
։ൃࢧԉͱ͍͏ࣄ !OBPLJBJOPZB 3FDSVJU.BSLFUJOH1BSUOFSTDP MUE
w BJOPZB w dNJYJ w dOPXSFDSVJU w ΠϯϑϥͱΞϓϦ։ൃ͕ ŧŔŕŪũƄŝſΤϯδχΞ BJOPZBJP
None
γϯϓϧͳϏϧυύΠϓϥΠϯπʔϧXBMUFSΛϦϦʔε͠·ͨ͠c"EWBODFE5FDIOPMPHZ-BC IUUQBUMSFDSVJUUFDIDPKQCMPH 8BMUFSWCFUBΛϦϦʔε͠·ͨ͠c"EWBODFE5FDIOPMPHZ-BC IUUQBUMSFDSVJUUFDIDPKQCMPH
)PXUPQMBZ4DBMBPOEPDLFSJ[FEJOGSBTUSVDUVSF4QFBLFS%FDL IUUQTTQFBLFSEFDLDPNBJOPZBIPXUPQMBZTDBMBPOEPDLFSJ[FEJOGSBTUSVDUVSF
IUUQTFJHPTBQVSJKQ
ΪϦΪϦ6OEFS ͋ͱ̑ϲ݄Ͱ͍̏͞Ͱ͕͢ ͕ΜΓ·͢
ࠓ͍ͬͯΔ͜ͱ
l։ൃࢧԉz
4JUF3FMJBCJMJUZ&OHJOFFSJOH %FWFMPQFS1SPEVDUJWJUZ&OHJOFFSJOH ηΩϡϦςΟରԠ ΤϯδχΞ࠾༻ɾਓࣄɾ৫׆ੑ ࣾ*5 FUDʜ
ࢧԉର ฐࣾ։ൃ৫ͷ ෳϓϩμΫτ܈
l։ൃΛՃͤ͞ΔͨΊͷ։ൃz ͳΒ ͳΜͰΔ
ͳͥΔͷ͔ʁ
ΤϯδχΞʹ σΟʔϓɾϫʔΫ ͯ͠Β͏ͨΊ
None
େࣄͳ͜ͱʹूத͢Δ ϢʔβʹՁΛಧ͚Δ͜ͱ ͨͩҰʹूதͰ͖Δ ڥͷͨΊʹ
ϢʔβʹՁΛಧ͚ΔͨΊʹ ຊ࣭తͰͳ͍ɺෆཁͳ ίετɾ࣌ؒɾ࣌ؒΛΔ γϟϩʔϫʔΫΛۃখԽ͢Δͷ͕త
ྫ͑
ϋΠύϫʔ$*ϚγϯಋೖͰ Ϗϧυ࣌ؒॖ
Ϗϧυ࣌ؒͷ ॖ 4DBMBϓϩδΣΫτͷ ίϯύΠϧ ʴ ςετ ʴ EPDLFSJNBHFੜ ࣌ؒΛʹ
Ϗϧυ࣌ؒͷॖ ʹ ࣌ؒۚͰങ͑Δ ʢ͔͔ͨͩ̎̌ສͰ
ͱ͍͑ɺ ͓ۚͷແବݣ͍
ྫ͑ɺ2"
Ͱςελʔ͞ΜΛूΊͯ ࿑ಇूతʹςετ
େྔͷςετ߲Λ ख࡞ۀͰ࣮ࢪ ϦϦʔε·ͰӋ٧·͍ͬͯΔͱ͋Γ͕ͪ
ఆٛʹैͬͯػցతʹ ͜ͳͤΔͷ ࣗಈԽ͢Δ͖
ςελʔ͞Μʹ ਓؒͰͳ͍ͱൃݟ͕ ͍͠όάΛ୳͢͜ͱʹ ूதͯ͠΄͍͠
εϚϗΞϓϦͷςετ ࣗಈԽج൫ͷಋೖ
0QFO45'ͷ ಋೖ ݕূͷςετϑΝʔϜߏங αΠόʔ͞Μ͓ੈʹͳͬͯ·͢
0QFO45'ͷ ಋೖ ϦϞʔτϫʔΫ࣌ ݕূར༻͕༰қʹ
"QQJVNʹΑΔ ࣮ػFFςετ ݕূɾಋೖ 0QFO45'4BVDFMBCTΛ ςετϑΝʔϜͱͯ͠ ࣗಈԽج൫Λߏங <3.1Y2VJQQFSNFFUVQ>։ൃͷͨΊͷ։ൃdεϚϗΞϓϦ͚FFςετͷݕূಋೖࣄྫΛ௨ͯ͡d4QFBLFS%FDL IUUQTTQFBLFSEFDLDPNBJOPZBSNQYRVJQQFSNFFUVQOVNCFSLBJGBGBMTFUBNFGBMTFLBJGBTVNBIPBQVSJYJBOHLFFFUFTVUPGBMTFKJBO[IFOHEBPSVTIJMJXPUPOH[JUF
"QQJVNʹΑΔ ࣮ػFFςετ ςετ࣮ߦͷΈΛ ͑ͨ <3.1Y2VJQQFSNFFUVQ>։ൃͷͨΊͷ։ൃdεϚϗΞϓϦ͚FFςετͷݕূಋೖࣄྫΛ௨ͯ͡d4QFBLFS%FDL IUUQTTQFBLFSEFDLDPNBJOPZBSNQYRVJQQFSNFFUVQOVNCFSLBJGBGBMTFUBNFGBMTFLBJGBTVNBIPBQVSJYJBOHLFFFUFTVUPGBMTFKJBO[IFOHEBPSVTIJMJXPUPOH[JUF
"QQJVNʹΑΔ ࣮ػFFςετ $IBMMFOHJOHͳ औΓΈ Perceptual diffsʹΑΔσάϨͷݕग़ڧԽ https://github.com/uber/image-diff <3.1Y2VJQQFSNFFUVQ>։ൃͷͨΊͷ։ൃdεϚϗΞϓϦ͚FFςετͷݕূಋೖࣄྫΛ௨ͯ͡d4QFBLFS%FDL IUUQTTQFBLFSEFDLDPNBJOPZBSNQYRVJQQFSNFFUVQOVNCFSLBJGBGBMTFUBNFGBMTFLBJGBTVNBIPBQVSJYJBOHLFFFUFTVUPGBMTFKJBO[IFOHEBPSVTIJMJXPUPOH[JUF
ࣗಈԽʹΑΔݮ ͚ͩͰͳ͘ʜ
2"σΟϨΫγϣϯͷ ෛՙݮ σΟϨΫλʔͷ γϟϩʔϫʔΫݮ
σΟϨΫλʔҎ֎ʹʜ ΤϯδχΞ୲֎ͷࣄ γϟϩʔϫʔΫͩΒ͚
ྫ͑ ϚʔέςΟϯά୲ σʔλूܭۀ
ڪΔ͖ ਓྗεΫϨΠ ϐϯά ച্ूܭγεςϜ σʔλग़ྗ"1* σʔλμϯϓػೳ͕ͳ͔ͬͨ ػೳՃͷॲͨͨͳ͍ ˣ ଞࣾཧԼͷച্ूܭը໘Λ
̍ϖʔδͣͭΊͬͯ͘ &YDFMʹసࣸʜ
4DSBQZʹΑΔ ͓खܰ εΫϨΠϐϯά ਓखͰ࣮ݱෆՄೳͩͬͨ සͰͷച্ܭଌ͕ Ͱ͖ΔΑ͏ʹ
4DSBQZʹΑΔ ͓खܰ εΫϨΠϐϯά 4DSBQZΫϩʔϥ͚ ϑϨʔϜϫʔΫ ेߦॻ͚ͦͦ͜͜ಈ͘ Ϋϩʔϥ͕ͭ͘ΕΔ ͓͢͢Ί http://asheesh.org/pub/scrapy-talk/#1
ϧʔνϯϫʔΫ ଞʹ·ͩ·ͩͨ͘͞Μ͋Δ
ձٞࣨ༧
શࣾඪ४ͷձٞࣨ༧γεςϜ ͋ΒΏΔ*5Ϧςϥγɾۀܗଶͷશࣾһ ສਓن ͕ ͑͘͠Δ͘࡞ΒΕͨݹͷγεςϜ
ՄೳͳݶΓ͍͘͢ ม͑Δ͜ͱ͕͍͠ͷΛ ͕ࣗͨͪม͑ΒΕΔൣғͰม͍͑ͯ͘ ձٞࣨ༧ΞϓϦΛ ձٞࣨલʹઃஔ 4MBDLJOUFHSBUJPO
ଞʹ͍Ζ͍Ζ ίπίπࣗಈԽ
w ϝʔϧͰ͔͠ల։͞Εͳ͍ใڞ༗ɻΤϯδχΞ औΓ͜΅͢ 4MBDLʹྲྀ͢Έ࣮ .JDSPTPGUqPXΛར༻ w QSJWBUFͳTMBDLDIBOOFMͷQVCMJDԽ DIBOOFMͷΞʔΧΠϒɾϦωʔϜͱ৽ن࡞Λ ߦ͏CPU࣮
w ۀπʔϧ܈ͷΞΧϯτਃɾཧ (PPHMF'PSN 4MBDLͰDIBUPQTͳ͍ग़͠
γϟϩʔϫʔΫΤϯδχΞ͔Β ݟ͑ͳ͍ͱ͜Ζʹ ࢁ΄Ͳ͋Δ
ίετͱ࣌ؒ ͪΓͭࣜʹ૿͑ͯ ϦϦʔεΛͤ͘͞Δ
–Tom DeMarco, দݪ ༑༁ ʮϐʔϓϧΣΞʯ lձࣾͷϧʔνϯϫʔΫɺबۀ࣌ؒʹݟ߹͏ͱ ͜Ζ·Ͱு͢Δ͕͋Δz
ΤϯδχΞྲྀͷղܾ๏Ͱ γϟϩʔϫʔΫΛ ௵͍͖ͯ͠·͠ΐ͏
(4ͷهࣄ IUUQTXXXUFDIOPMPHZSFWJFXKQTBTHPMENBOFNCSBDFTBVUPNBUJPOFWFOUIFNBTUFSTPGUIFVOJWFSTFBSFUISFBUFOFE
–Joel Spolsky ੨ ༃༁ ʮMore Joel on Softwareʯ l͝Έ͋Δͱ͜Ζʹۚ͋Δz
–Eric Sink, ੨ ༃༁ ʮֵ৽తιϑτΣΞاۀͷ࡞Γํʯ lιϑτΣΞ։ൃऀձࣾͷதͰ͕ࣗ࠷ॏཁͳਓؒͩͱࢥ͍ ࠐΉ͕͋Δɻ͍͋ʹ͘ͱ͜ͷଚେ͞ʹ͍ͬΜͷਅ࣮͕͋Γɺ ։ൃऀ͕ଞͷਓͨͪͱ͏·͘ંΓ߹͏ͷΛ͍ͯ͘͠͠ΔɻͦΕͰ ࢲͷओுมΘΒͳ͍ɻ։ൃऀͷεΩϧίʔσΟϯάҎ֎ͷ͞ ·͟·ͳλεΫʹద༻Մೳͳͷͩɻ
ɾΧελϚαʔϏε୲ͱͯ͠ɺͷΈΛཧղ͍ͯ͠Δ ։ൃऀΛΑΓૣ͘ݟ͚ͭΔ͜ͱ͕Ͱ͖Δ ɾηʔϧεΨΠͱͯ͠ɺͷΈΛཧղ͍ͯ͠Δ։ൃऀ ͦΕͰԿ͕Ͱ͖Δͷ͔ͱ͍͏࣭ʹ༰қʹ͑Δ͜ͱ͕Ͱ͖Δɻ ɾϚʔέςΟϯά୲ͱͯ͠ɺ։ൃऀϚʔέοτઓུʹӨڹ͢Δ ٕज़తͳબ͕͔͔ΘΔܾஅʹཱͭ͜ͱ͕Ͱ͖Δɻ اۀ։ൃऀ͕ιϑτΣΞߏஙҎ֎ͷ׆ಈʹ͔͔ΘΔ͜ͱΛ ڪΕΔ͖Ͱͳ͍ɻz