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Koji SHIMADA
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October 18, 2025
Programming
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One Enishi After Another
Rails Girls Sapporo 2ndでの発表資料です
https://railsgirls.com/sapporo-2nd.html
Koji SHIMADA
PRO
October 18, 2025
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Transcript
ONE ENISHI AFTER ANOTHER ౡాߒೋ !TOPP[FS 4BU 3BJMT(JSMT4BQQPSPOE
ౡాߒೋ!TOPP[FS
from Sapporo, with love for Ruby.
Vision IT Systems Teams Organization Management Execution Management Business Process
Talent Development ENISHI TECH INC.
Ruby no Kai
None
None
Ͳ͏ͧΑΖ͓͘͠ئ͍͠·͢
ONE ENISHI AFTER ANOTHER ౡాߒೋ !TOPP[FS 4BU 3BJMT(JSMT4BQQPSPOE
ONE ENISHI AFTER ANOTHER ౡాߒೋ !TOPP[FS 4BU 3BJMT(JSMT4BQQPSPOE
ԑ ͑ʹ͠
ԑى ͑Μ͗
ԑ͋ΔҼՌʢݪҼͱ݁Ռʣͷ࿈ʹɺผͷҼՌͷ࿈͕ۮવʹೖΓࠐΈɺ৮͢Δ͜ͱ ىԑ͕ͦΕͧΕͷҼՌʹԿΒ͔ͷӨڹΛՃ͑ɺ୯ಠͰਐߦͨ͠߹ͱҟͳΔ݁Ռ͕ੜ͡Δ͜ͱ ࢁ㟒ल༤ʰᣭͷܦӦɿԑ͔ΒىΛੜΉਓͮ͘Γɾͮ͘ΓʱΑΓ ԑى ͑Μ͗
wԑىͷݩͱͳΔෳͷҼՌ͕ؔۮવʹަࠩ͢Δ wᣭͰͦΕͧΕͷҼՌ͕ؔަࠩ͢Δ͜ͱʹΑͬͯԑى͕ੜ͡Δ ᣭ ͍ͯ͢Μ ࢁ㟒ल༤ʰᣭͷܦӦɿԑ͔ΒىΛੜΉਓͮ͘Γɾͮ͘ΓʱΑΓ 👇 👇
ᣭͱͯ͠ͷ3BJMT(JSMT4BQQPSPOE
3BJMT(JSMT4BQQPSPOEͰࢀՃऀͷΈͳ͞Μʹੜ·Εͨԑ 🔀ιϑτΣΞΛ࡞Δ׆ಈͱͷԑ ࣗͷιϑτΣΞΛ࡞ΕΔ͔͠Εͳ͍Մೳੑ 🔀ಓ۩ٕज़ͱͷԑ 3VCZɺ3BJMTɺλʔϛφϧɺ74$PEFɺ)FSPLVʜ 🔀ਓͱͷԑ ίʔνɺελοϑɺࢀՃऀ
ԑ͔ΒىΛੜΉ ԑʹࢸΓͯҰॠʹແʹ͋͏ɻͦΕ͕৺ͷͱΊΑ͏ɺମͷ;ΕΑ͏ ͰࣄΛى͜͠ʢىʣɺͦΕΑΓࠓ·Ͱଓ͚ͯདྷͨΕΔҼՌͷߦಈ͕ɺ يಓΛͣΕΏ͖ɺ·ͨͣΕ͕ͨɺيಓʹ෮͠ߦ͘ͳΓ ೆํ۽ೇʰٓ๏ཾॻ؆ʱ ʢڧௐҾ༻ऀʹΑΔʣ l
w ରʹҙࣝΛ͚ɺੵۃతʹಇ͖͔͚Δ͜ͱͰԑ͔Βى͕ੜ͡Δ w ྑ͘ͳΔʹɺ·͔ͣࣗΒ৺Λ։͘͜ͱ w ح৺ w ڵຯؔ৺ w ָ͠Ήؾ࣋ͪ
৺ͷͱΊΑ͏ɺମͷ;ΕΑ͏ͰࣄΛى͜͢
w ڵຯͷͳ͍ͷΛڵຯ͋Δͷʹม͑Δ༐ؾɺ·ͣͬͯΈΔ͜ͱͰى͖Δ w ʮࢼ͢ʯͱ͍͏ԑ͕ɺ࣍ͷىΛੜͤ͡͞ΔՄೳੑΛੜΉ ͷલʹདྷͨόεʹɺ·ͣͬͯΈΔ͜ͱ l ߥມʰ͙͢ʹཱͭͷ͙͢ʹཱͨͳ͘ͳΔʱ
ԑ͔Β ىΛੜΉ
ࣗͷͨΊͷιϑτΣΞΛॻ͘ େࣄͳ͜ͱ lϓϩϑΣογϣφϧzͷΑ͏ʹΖ͏ͱ͠ͳ͍ ڵຯɺح৺ɺָ͠͞Λେࣄʹ͢Δ ฤΈྉཧΈ͍ͨʹɺࣗपΓͷਓ͕ຬ͢ΔͷΛ࡞ΔͷͰΑ͍
ϓϩάϥϛϯάΛֶͿ ʮࣗͷح৺ؔ৺ɺײੑΛ༬͚ΒΕΔରʯΛݟ͚ͭग़͠ɺ ͦΕΛֶͿ͜ͱͰɺ࣍ͷΑ͏ͳྲྀΕ͕ੜ·ΕΔ l ߥມʰ͙͢ʹཱͭͷ͙͢ʹཱͨͳ͘ͳΔʱ ษڧ͢Δͷ͕ͱָͯ͘͠ɺتͼɺͤʹͳΔ ͤΛײ͓͔ͨ͛͡ͰɺษڧʹΑͬͯಘͨͷ͕ͯ͢ ݂ʹͳΔ
ֶΜͩ͜ͱ͕ʹ͍࣮ͭͨײɺษڧͷָ͠͞Λײͯ͡ɺ ͞ΒʹڵຯΛٻͯ͠Έͨ͘ͳΔ
None
IUUQTDPNNPOTXJLJNFEJBPSHXJLJ'JMF.BSJBO@8SJHIU@&EFMNBO@ KQH ݟͨ͜ͱ͕ͳ͍ͷʹͳΕͳ͍ .BSJBO8SJHIU&EFMNBO l
h t t p s : / / r u
b y k a i g i . o rg ϓ ϩ ά ϥ ϛ ϯά ݴ ޠ Λ ࡞ ͬ ͯ ͍ Δ ਓ ͨ ͪ Λ ݟ ʹ ͍ ͘
h t t p s : / / r u
b y k a i g i . o rg 5 I F 3 V C Z $ P N N V O J U Z ͱ ͷ ܨ ͕ Γ Λ ֬ ೝ ͢ Δ
h t t p s : / / k a
i g i o n r a i l s . o rg 8F C Ξ ϓ Ϧ έ ʔ γϣ ϯ Λ ࡞ ͬ ͯ ͍ Δ ਓ ͨ ͪ Λ ݟ ͯ Έ Δ
h t t p s : / / k a
i g i o n r a i l s . o rg 8F C Ξ ϓ Ϧ έ ʔ γϣ ϯ Λ ࡞ ͬ ͯ ͍ Δ ਓ ͨ ͪ Λ ݟ ͯ Έ Δ
ίϛϡχςΟʹࢀՃͯ͠ΈΔ 3VCZίϛϡχςΟ IUUQTTDSBQCPYJPSVCZKQҬSC
ίϛϡχςΟʹࢀՃͯ͠ΈΔ 3VCZίϛϡχςΟ IUUQTTDSBQCPYJPSVCZKQҬSC ͷίϛϡχςΟ OV͞ΜUPNJP͞Μͷհͯ͘͠Ε͍ͯͨͷͳͲΛࢀߟʹ
ίϛϡχςΟΛ࢝ΊͯΈΔ IUUQTOPUFDPNDP@CBDIJFOOFDCFBDC
ίϛϡχςΟΛ࢝ΊͯΈΔ IUUQTOPUFDPNDP@CBDIJFOOFDCFBDC
ԑى ܧଓ͍ͯ͘͠
ᣭͱͯ͠ͷ3BJMT(JSMT4BQQPSPOE
ܧଓ͢Δԑىͷ݁Ռͱͯ͠ͷ3BJMT(JSMT4BQQPSPOE
ZFBSTBHPʜ
None
None
l+PZGVM3VCZz
None
IUUQTUIFCSJEHFKQMJOEBMJVLBTJOUFSWJFX
IUUQTUIFCSJEHFKQMJOEBMJVLBTJOUFSWJFX
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IUUQTTOPP[FSIBUFOBCMPHKQFOUSZ
IUUQTTOPP[FSIBUFOBCMPHKQFOUSZ
None
None
ܧଓ͢Δԑىͷ݁Ռͱͯ͠ͷ3BJMT(JSMT4BQQPSPOE
ܧଓ͢Δԑىͷىͱͯ͠ͷ3BJMT(JSMT4BQQPSPOE
IUUQTXXX fl JDLSDPNQIPUPTSFDPNQJMF@OFU ͍ܰؾ࣋ͪͰɺͱΓ͋͑ͣ ͬͯΈΔ͜ͱ͕؊ཁͩͱ ࢥ͍·͢ɻʜ·ͣॻ͍ͯΈ ͳ͍ͱ࢝·Γ·ͤΜ͔Βɻ l <SVCZ>
ܧଓ͢Δԑىͷىͱͯ͠ͷ3BJMT(JSMT4BQQPSPOE ͜ͷͰͰ͖ͨʮԑʯ͔Β ࣍ͷͨ͘͞Μͷʮىʯ͕ੜ·Εଓ͍͍͖ͯ·͢Α͏ʹ
ONE ENISHI AFTER ANOTHER ౡాߒೋ !TOPP[FS 4BU 3BJMT(JSMT4BQQPSPOE
ॻ੶ɿ wೆํ۽ೇʰೆํϚϯμϥʱʢՏग़จݿʣ wߥມʰ͙͢ʹཱͭͷ͙͢ʹཱͨͳ͘ͳΔʱʢϓϨδσϯτࣾʣ wάϨʔεɾϘχʔʰࣗͰʮ࢝Ίͨʯঁͨͪʱʢւͱ݄ࣾʣ w4BN3VCZʰ"HJMF8FC%FWFMPQNFOUXJUI3BJMTʱʢ1SBHNBUJD#PPLTIFMGʣ จɿ wʰᣭͷܦӦɿԑ͔ΒىΛੜΉਓͮ͘Γɾͮ͘ΓʱIUUQTSFQPTJUPSZNVTBTIJBDKQETQBDFCJUTUSFBN NVTBTIJ@@@@@@@ZBNBTBLJQEG 8FCɿ wʰ3BJMT(JSMTͷ͖ͭͮʮ3BJMT(JSMTNPSFʯʱIUUQTCMPHDMFBODPEFSDPNVODMFCPCUIFDMFBOBSDIJUFDUVSFIUNM
wʰϓϩάϥϛϯάͷָ͠͞Λଟ͘ͷঁੑʹ͍͑ͨɿʮ3BJMT(JSMTʯ࢝ऀͷϦϯμɾεΧε͞ΜʹΠϯλϏϡʔʱIUUQTUIFCSJEHFKQ MJOEBMJVLBTJOUFSWJFX өըɿ wʰ0OF#BUUMF"GUFS"OPUIFSʱ ࢀߟจݙ