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66*%͸
 িಥͷເΛݟΔ͔  4LJMM8FEOFTEBZ

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͓·͑ͩΕ΍ w ͍ͩ͠ w --ͱ͔Α͘ॻ͘Α w ࠷ۙ͸͍Μ;ΒΛ͔͍ͬͯ͡·͢ w ͓ञΛ୔ࢁҿΊΔਓΛਅ݋ʹ୳͍ͯ͠·͢

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66*% w ϢχʔΫͳจࣈྻΛಘΔ࣌౳ྑ͘࢖͍ͬͯΔͱࢥ͍ ·͢ ҎԼྫ 
 GEEDBCBEDE w ͲΜͳʹੜ੒ͯ͠΋িಥ͠ͳ͍ͱ͔ɻɻ w Ͱ΋ຊ౰ͳΜͰ͔͢Ͷ

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ͦ΋ͦ΋66*%ͱ͸ w ෼ࢄγεςϜ্Ͱͱ౷཰ແ͠ʹ࡞੒Ͱ͖Δࣝผࢠͱ ͯ͠ઃܭ͞Εͨ w όʔδϣϯ͸େผͯͭ͠ଘࡏ w ࢓༷͸3'$ͱͯ͠ެ։͞Ε͍ͯΔ
 IUUQTUPPMTJFUGPSHQEGSGDQEG

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w ࠷ॳͷ੺ࣈͷ෦෼͕όʔδϣϯΛද͍ͯ͠Δ w ࠷ޙͷ੺จࣈͷ෦෼͸όϦΞϯτͱݺ͹ΕΔ
 มछͷछྨΛද͍ͯ͠Δ w όʔδϣϯ͸/*$ͷ."$ΞυϨεΛ࢖༻ͨ͠Γ w όʔδϣϯ͸όʔδϣϯͷҰ෦Λ104*9ͷ6*%΍(*%Ͱஔ͖ ׵͑ͨ΋ͷ w όʔδϣϯͱ͸.%΍4)"Ͱੜ੒ͨ͠ϋογϡΛ༻͍ͯ ͍Δ΋ͷͱͳ͍ͬͯΔ GEEDBCBEDE

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GEEDBCBEDE w զʑ͕ීஈ༻͍͍ͯΔ66*%͸όʔδϣϯ w ͦΕʹՃ͑ͯόϦΞϯτͱݺ͹ΕΔจࣈྻ͕ՃΘΔ
   " # ͷ͍ͣΕ͔ʹͳΔ w શͯཚ਺ʹΑΔੜ੒

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GEEDBCBEDE w ্ه66*%͸ਐ਺ͰܻCJU ਐ਺  w ͔͜͜Βόʔδϣϯ  ͱόϦΞϯτ  ΛҾ ͘ͱɺCJUͷࣗ༝౓͕͋Δ w ?º?௨Γ͘͢͝ଟ͍

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ຊ౰ʹিಥ͠ͳ͍ͷʁ w ҙ֎ͱ਺ඦສͱ͔ग़ྗ͢ Δͱ͙͢িಥ͢ΔͷͰ͸ʁ w ͍͘Β
 EFWVSBOEPNͱ͔छʹ ࢖ͬͯͯ΋Ͷ͑ɻɻ

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·͋΍ͬͯΈͬ΃ w 66*%Λͻͨ͢Βੜ੒ͯ͠%#ʹ*/4&35 w ͕࣌ؒڐ͢ݶΓͣͬͱ

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require 'securerandom' require 'mysql2' client = Mysql2::Client.new(:host => 'localhost', :username => 'root', :password => 'password', :database => 'uuid' ) while true do begin uuid = SecureRandom.uuid client.query("insert into uuid.ruby (`uuid`) values ('#{uuid}')") puts uuid rescue => e p e end end

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ॏෳνΣοΫ w ੜ੒͞Εͨ66*%શ݅Λ͖࣋ͬͯͯɺ
 ཁૉ਺Χ΢ϯτ w VOJRϝιουΛར༻ͯ͠ॏෳഉআ
 ཁૉ਺Χ΢ϯτ w ཁૉ਺ʹҧ͍͕͋Ε͹ॏෳ͍ͯ͠Δ͸ͣ ͘͢͝ಥ؏ͳॏෳνΣοΫ

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ॏෳνΣοΫ ͘͢͝ಥ؏ͳॏෳνΣοΫ puts 'িಥͨ͠Ͱ' if data.count != data.uniq.count

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ॏෳνΣοΫ ద౰ʹ#PUʹͭͿ΍͔ͤͯ֬ೝͱ͔ͯ͠·ͨ͠

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໰୊ൃੜ w ༻ҙ͍ͯͨ͠%#ͷ༰ྔΛ௒͑Δ w ૉ௚ʹσΟεΫ͕େ͖͍%#Λ࡞੒Ҡߦ

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໰୊ൃੜ w ԯ௒͑ͨ͋ͨΓ͔ΒॏෳνΣοΫͰ͖ͳ͘ͳΔ ͓͍ 
 1$ͷϝϞϦʹ৐Βͳ͍  w ஞ࣍%#͔ΒಡΈऔͬͯಉҰͷ66*%͕͋Δ͔%#ʹ໰ ͍߹Θͤ͢Δํࣜʹมߋ

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໰୊ൃੜ w ,74ʹ͢Ε͹Α͔ͬͨײ w ฒྻॲཧग़དྷΔΑ͏ʹ͚ͨ͠ΕͲ΍͸Γ஗͍
 ༻ҙͨ͠%#αʔόʔ͕ශऑͩͬͨ

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Ͱɺিಥͨ͠ͷʁ w ੜ੒ͨ͠66*%͸ԯສ w ԯϨίʔυௐ΂ͨײͩ͡ͱিಥ͠·ͤΜͰͨ͠

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Ͱɺিಥͨ͠ͷʁ w ଟ෼͠ͳ͍ͱࢥ͏ w 66*%ͩͱিಥ͠ͳ͍ͷ͔΋͚ͩΕͲɺ୯७ͳIFYͱ͔ ͸Ͳ͏ͳΜͩΖ͏

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͓͠·͍