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Golangの紹介(基礎)
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Yusuke AONO
October 28, 2014
Programming
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170
Golangの紹介(基礎)
Yusuke AONO
October 28, 2014
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Transcript
Goݴޠೖͷೖ 2014/10/28 Atraeࣾษڧձ
Goݴޠͱ • 2009ʹൃද͞ΕͨΦʔϓϯιʔεͷݴޠ • Google͕։ൃ • CݴޠɺUTF-8ɺmemcachedͷ։ൃऀΒ͕ઃ ܭʹࢀՃ • ݱࡏόʔδϣϯ1.3.3
ಛ • ੩తͳܕ͖ݴޠ • γϯϓϧʢͳߏจʣ • ʮྫ֎ʯ͕ແ͔ͬͨΓ͢Δ • ίϯύΠϧɺ࣮ߦ͕͍ •
҆શੑ͕ߴ͍ • ྫɿະ༻ͷมύοέʔδ͕͋ΔͱɺίϯύΠϧ௨Βͳ͍ • ฒྻॲཧָ͕ʹॻ͚Δ
࠾༻ࣄྫ • ίϚϯυϥΠϯπʔϧϛυϧΣΞʹΘΕΔ͜ͱଟ͠ɻ ·ͩRailsతͳఆ൪ແ͍ײ͕ͩ͡ɺWAF͋Δ • peco • hub • Docker
• Packer • mackerel
Πϯετʔϧ • MacͳΒɺhomebrew͏͕ΑΖ͠ • GOPATHͱ͍͏ڥมͷઃఆ͕ඞཁͰ͢ • ੨ϗʔϜσΟϨΫτϦΛઃఆͯ͠Δ • ڥߏஙΊΜͲ͍ਓɺGolangͷαΠτͰͱΓ͋͑ ͣಈ͔͢ͷ͕Φεεϝ
• http://play.golang.org/p/-URiXol0GB
ϋϩʔϫʔϧυ
ϓϩάϥϜͷ࣮ߦ • ຊདྷίϯύΠϧΛͯ͠͏ݴޠ • ͕ɺgo run ίϚϯυͰɺίϯύΠϧ͠ͳͯ͘ ࣮ߦՄೳ • ίϯύΠϧɺgo
build ίϚϯυͰ • ίϯύΠϧͰੜ͞ΕΔͷɺ࣮ߦܗࣜͷόΠ φϦϑΝΠϧ
ϑΥʔϚοτ • ͭ͡ίʔσΟϯάن͕͔ͳΓݫ͍͠ • Πϯσϯτɺϋʔυλϒ͡Όͳ͖Όμϝ • ֯εϖʔεΛೖΕΔ/ೖΕͳ͍ॴ etc. • ࣗ༝͕͍ɺ౷Ұੑ͕ੜ·ΕΔ
• go fmt ίϚϯυͰࣗಈܗՄೳ • ࣗಈͰߏจνΣοΫͯ͘͠ΕΔϓϥάΠϯ͕ɺ͍͍ͩͨͷΤ σΟλʹ͋Δʢඞਢͩͱࢥ͏ʣ
جຊจ๏ • εϥΠυʹ͢ΔͷΊΜͲ͍ ϒϩάʹॻ͍ͨ • http://yusuke-aono.hatenablog.com/entry/ 20141026/1414313149
Goroutine • Goݴޠͷେ͖ͳಛͷҰͭɺಉظʢฒߦॲ ཧʣϓϩάϥϛϯάΛ؆୯ʹ࣮ݱ͢Δػೳ • ಡΈํΰϧʔνϯ • ͍ΘΏΔεϨουతͳͷ • main()
ؔ1ͭͷΰϧʔνϯͷதͰ࣮ߦ͞Ε ͍ͯͨ
Not Goroutine
Goroutine (ʆŋωŋ´)ʎ
Channel • ෳͷΰϧʔνϯؒͰσʔλΛΓͱΓ͢Δ ʹʁ • ͦͷࡍʹ͏ͷ͕ɺνϟωϧ • ΈࠐΈͷ make() ؔΛར༻
Channelͷར༻
νϟωϧɺͲ͏͑Δ͔ • ྫ͑ɺಉ࣌ʹෳͷαʔόʔʹϦΫΤε τΛग़ͯ͠େྔͷ໋ྩͱେྔͷσʔλΛฒྻ ॲཧ͢ΔϓϩάϥϜɺͱ͔ʁ • GoͷϛυϧΣΞ͕ଟ͍ͷɺGoroutine ͱChannelͷଘࡏ͕͋Δ͔ΒͩͱࢥΘΕΔ
GoͷWAF • Revel • Martini • Goji • net/http and
so on. SinatraͬΆ͍ͷ͔ΒRailsΈ͍ͨͳશ෦ೖΓ·Ͱ৭ʑ͋Δɻ ৮ͬͯࢼ࣌ؒ͢ͳ͔ͬͨɺ͢Μ·ͤΜɻɻ
·ͱΊ • γϯϓϧʹ࡞ΒΕ͍ͯͯɺ݁ߏ͍֮͑͢ • ίϯύΠϧ࣌ʹνΣοΫͯ͘͠ΕΔͷྑ͍ʢϙΧϛεݮΔʣ • ฒྻॲཧ͕؆୯ʹॻ͚ͯͼͼΔ • ͱ͍͑ɺ੩తܕ͚ίʔσΟϯάͷεϐʔυײ͕ଟগམ ͪΔͩΖ͏ʢಛʹRubyʹͱͬͯʣ
• ܭࢉʢߦྻͷੵͱ͔ʣॲཧೳྗͱ͔ɺWAFͱͯ͠ͷ͍ ͢͞ͱ͔͏গ͠ௐͯΈ·͢