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try_to_making_a_gem_with_pattern_matching.pdf
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morihirok
October 16, 2019
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try_to_making_a_gem_with_pattern_matching.pdf
Ebisu.rb #25
morihirok
October 16, 2019
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Transcript
Ruby2.7Ͱಋೖ͞ΕΔ Pattern matchingͰ GemΛ࡞ͬͯΈͨ Ebisu.rb #25 @_morihirok
About me • Github: morihirok • Twitter: @_morihirok • STORES.jp
inc,
Ruby 2.7ΑΓ Pattern matching ͱ͍͏ػೳ͕ೖΓ·͢
3VCZ,BJHJ1BUUFSONBUDIJOH/FXGFBUVSFJO3VCZΑΓҾ༻ IUUQTTQFBLFSEFDLDPNL@UTKQBUUFSONBUDIJOHOFXGFBUVSFJOSVCZEPU
3VCZ,BJHJ1BUUFSONBUDIJOH/FXGFBUVSFJO3VCZΑΓҾ༻ IUUQTTQFBLFSEFDLDPNL@UTKQBUUFSONBUDIJOHOFXGFBUVSFJOSVCZEPU
ͬͯΈ͍ͨͷͰ Կ͔࡞Ζ͏
STORES.jpϝΠϯDB͕ MongoDB • ओཁͳσʔλશͯMongoDBʹೖ͍ͬͯΔ • ओཁͳΫΤϦશͯMongoDBʹ͔͍ͬͯΔ • વ࣮ߦܭըMongoDBͷͷΛ֬ೝ͢Δ • MongoDBͷexplainಡΈͮΒ͍
MongoDBͷexplain݁Ռͷ αϯϓϧ > db.items.find({price: 119}).explain("executionStats") { "queryPlanner" : { "plannerVersion"
: 1, "namespace" : "sample_db.items", "indexFilterSet" : false, "parsedQuery" : { "price" : { "$eq" : 119 } }, "winningPlan" : { "stage" : "COLLSCAN", "filter" : { "price" : { "$eq" : 119 } શͯ+40/Ͱදݱ͞ΕΔ
Pattern matchingΛ͑ JSONͷѻ͍͕ ָʹͳΔͷͰʁ
ͱ͍͏͜ͱͰ࡞ͬͨͷ͕͜Ε FYQMBJOͷ+40/Λ ͍͍۩߹ʹ.BSLEPXOͷ ςʔϒϧʹม͢Δ
ΠϯσοΫε͕ޮ͍ͯͳ͍ͱ͖ͷ explain݁Ռ ͕͜͜z$0--4$"/zʹͳΔ
͜͏ॻ͚Δ ͕͜͜z$0--4$"/zʹͳΔ
ΠϯσοΫε͕ޮ͍͍ͯΔͱ͖ͷ explain݁Ռ ͕͜͜z'&5$)zʹมΘΔ ͕͜͜z*94$"/zʹͳΔ ͜͜ʹΠϯσοΫε໊͕ೖΔ
͜͏ॻ͚Δ ͕͜͜z'&5$)zʹมΘΔ ͕͜͜z*94$"/zʹͳΔ ͜͜ʹΠϯσοΫε໊͕ೖΔ
͜͏ॻ͚Δ มΛόΠϯυͰ͖Δ ͜͜ʹΠϯσοΫε໊͕ೖΔ
࠷ऴతʹ͜͏ͳΔ
STORES.jpͰ ͍͍ײ͡ʹ͑ͦ͏
͓લຊ൪ͷRubyΛ 2.7ʹ্͛ΔͭΓͳͷ͔ʁ
Pattern matchingແ͠Ͱ ॻ͖͑Δͱ
Pattern matchingແ͠Ͱ ॻ͖͑Δͱ όʔδϣϯ͝ͱͷ ίʔυͷဃ͕ܹ͘͠ͳΔ
͜Μͳํ๏͋Γ·͢
pattern-matchΛར༻͢Δͱ 1SPDDBMM ͷγϯλοΫεγϡΨʔ͕ Ͱ͋Δ͜ͱΛར༻͍ͯ͠Δ
pattern-matchΛར༻͢Δͱ ͋ΔఔࣅͨίʔυΛ อͭ͜ͱ͕Ͱ͖Δ
Ruby2.7Ҏ্Ͱ Pattern matchingΛ͍͍ͨ Ruby2.6ҎԼͰ gem͍͍ͨ
RubyͷόʔδϣϯʹΑͬͯ require͢ΔϑΝΠϧΛม͑Δ • mongo_clarify.rb 3VCZͷόʔδϣϯʹΑͬͯ ϑΝΠϧΛม͍͑ͨϞδϡʔϧ
RubyͷόʔδϣϯʹΑͬͯ require͢ΔϑΝΠϧΛม͑Δ • investigate.rb 3VCZҎ্ͳΒ 1BUUFSO.BUDIJOH൛Λ͏
• ىಈதͷRubyͷόʔδϣϯจࣈྻΛอ࣋͢Δ ఆ Gem::Version • όʔδϣϯจࣈྻΛൺֱՄೳʹ͢ΔΫϥε RUBY_VERSION
ςετRubyͷόʔδϣϯʹΑͬͯ require͢ΔϑΝΠϧΛม͑Δ • mongo_clarify_spec.rb 3VCZͷόʔδϣϯʹΑͬͯ ϑΝΠϧΛม͍͑ͨϞδϡʔϧ
ςετRubyͷόʔδϣϯʹΑͬͯ require͢ΔϑΝΠϧΛม͑Δ • .travis.yml $*ʹෳόʔδϣϯͰ ςετͯ͠Β͏
RubyGemsʹస͕͍ͬͯ·͢ • https://rubygems.org/gems/mongo_clarify
༨ஊ Gemͷ࡞աఔͰ MongoDBͷexplainʹ׳Ε ͜ͷGem͍ͬͯͳ͍