ゼロから始めるGo Modules

by kenjihanada

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θϩ͔Β࢝ΊΔ .PEVMFT

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ࣗݾ঺հ ໊લ༶໺ྑஐ ग़਎஍ෆ໌ ࡛ۄPSେ࿈ ֶ೥ֶ෦೥ ޷͖ͳϓϩάϥϛϯάݴޠ(P झຯےτϨ Ξχϝ өըFUD

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໨࣍ 1.Go modules is Կ? 2.GOPATH؅ཧ͔Βͷมߋ఺ 3.Go modulesͰͷ؅ཧͷྲྀΕ

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Go modules is Կʁ

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Go modules (vgo) ͱ͸ • GoίϚϯυʹ౷߹͞ΕͨGoͷύέʔδ(όʔδϣ ϯ)؅ཧγεςϜ • ϧʔτʹgo.modϑΝΠϧΛ࣋ͭGoύοέʔδͷू ·Γ • Go1.11~ࢼݧతʹಋೖ

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Go 1.10 Ҏલ͸… • GOPATHͷԼʹιʔείʔυΛ഑ஔͯ͠؅ཧ • GithubͳͲͷ֎෦Ͱެ։͞Ε͍ͯΔύο έʔδΛ go get ͢Δͱ$GOPATH/srcʹ഑ஔ ͞Εɺ͔ͦ͜Βͷ૬ରύεͰimportͯ͠؅ཧ

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Go modules Ҏલ͸… Glide Dep

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GOPATH؅ཧ͔Βͷมߋ఺

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GOPATH֎͔Βύοέʔδ؅ཧ ͕ߦ͑ΔΑ͏ʹͳͬͨʂ

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go mod ʹΑΔ؅ཧػೳʂ • go mod init ͰmoduleͷॳظԽ͕Մೳ • depͳͲͰ؅ཧ͍ͯ͠Δطଘͷmodule͸go mod initʹΑͬͯࣗಈతʹม׵͞ΕΔ • ੜ੒͞Εͨgo.modϑΝΠϧʹґଘؔ܎Λ௥Ճͯ͠ ؅ཧ͢Δ

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go mod ʹΑΔ؅ཧ(ॳظԽ)

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go mod ʹΑΔ؅ཧ(طଘ)

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go mod ʹΑΔ؅ཧ(طଘ) $POWFSU

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go mod ʹΑΔ؅ཧ(go.mod) • Goύοέʔδͷґଘؔ܎͸go.modʹ • exclude, replace, moduleσΟϨΫςΟϒ ͕༻ҙ͞Ε͍ͯΔ

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go mod ʹΑΔ؅ཧ(go.mod) ϧʔτσΟϨΫτϦͷNPEVMF໊ SFRVJSFͨ͠NPEVMFΛஔ͖׵͑Δ ඞཁͳNPEVMF໊ͱWFSTJPOΛ௥Ճ

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Minimal Version Selection • ৗʹબ୒Ͱ͖Δ͏ͪͰ࠷ݹͷόʔδϣϯͷ ύοέʔδΛબ୒ͯ͠ར༻͢Δ • ύοέʔδ͕Ξοϓσʔτ͞Εͯ΋ৗʹಉ ͡όʔδϣϯΛ࢖͍ଓ͚ΒΕΔ

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Semantic Import Versioning

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Go modules ؅ཧͷྲྀΕ

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Go modules ؅ཧͷྲྀΕ 1. Project rootͰgo mod init module_name  (depͳͲ࢖͍ͬͯΕ͹go mod init) 2. go getͳͲͰґଘؔ܎Λ௥Ճ 3. มߋ఺͸go.modͰॻ͖׵͑

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·ͱΊ • Go modules͸Goެࣜͷύοέʔδόʔδϣϯ ؅ཧػೳ • Gopath֎Ͱιʔείʔυ؅ཧͰ͖Δ • Semantic Versioning, Minimal Version Selection ͷಋೖʹΑΓґଘؔ܎ͷҋΛ࿨Β͛ͯ͘ΕΔ 5IF(PQIFSDIBSBDUFSJTCBTFEPOUIF(PNBTDPUEFTJHOFECZ3FOÉF'SFODI