Rails な受託の会社でぼくがやっていること / What I do in a Rails consulting company

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Rails ͳडୗͷձࣾͰ ΅͕͘΍͍ͬͯΔ͜ͱ ࡾଜ ӹོ a.k.a takkanm Ӭ࿨γεςϜϚωδϝϯτ ΞδϟΠϧࣄۀ෦ / Asakusa.rb

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Who am I • Ӭ࿨γεςϜϚωδϝϯτ ΞδϟΠϧࣄۀ෦ • RubyΞδϟΠϧάϧʔϓ νʔϑϓϩάϥϚʔ • Asakusa.rb ϝϯόʔ • 1 of 6 ਓ͍ΔύʔϑΣΫτRubyஶऀ

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ࠂ஌

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https://esminc.connpass.com/event/123239/

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ࠓ೔ͷ࿩

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Θͨ͠ͱ Rails • Ruby ͸ֶੜͷͱ͖͔Β (2004)͙Β͍ • Rails ͸ 0.6 ͙Β͍ʹ৮͚ͬͨͲɺ͓࢓ࣄͰ࢖͏Α͏ʹͳͬͨͷ ͸ 2008 ͷ Rails2 ͙Β͍ͷͱ͖ • Railsษڧձ@౦ژͱ͍͏ษڧձͷ N ୅໨ͷ։࠵ऀ

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ࠓ೔ͷ಺༰ ͦΜͳΘ͕ͨ͠Ӭ࿨γεςϜϚωδϝϯτͱ͍͏ Rails ʹΑΔγε ςϜ։ൃΛϝΠϯͱͨ͠डୗձࣾͰͲ͏࢓ࣄΛ͍ͯ͠Δ͔ͱ͍͏ ࿩Λ͠·͢ɻʮ೔ʑϓϩδΣΫτͰͲ͏࢓ࣄΛ͍ͯ͠Δ ͔ʯɺʮ৽͍͠஥͕ؒདྷͨͱ͖Ͳ͏͍ͯ͠Δ͔ʯɺʮϓ ϩδΣΫτ֎ͷ׆ಈΛͲ͏͍ͯ͠Δ͔ʯͱ͍͏؍఺Ͱ͓఻ ͑Ͱ͖Ε͹ͱࢥ͍·͢ɻ

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What is Ӭ࿨γεςϜϚωδϝϯτ ΞδϟΠϧࣄۀ෦ ?

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ESMΞδϟΠϧࣄۀ෦ͷྺ࢙ • 2000 ೥͙Β͍ʹ฼ମͱͳΔࣄ຿ॴͷൃ଍ • ݩ͸ɺXP ΍ΞδϟΠϧએݴʹײԽ͞Εͨਓؒͨͪͷू·Γ • 2006 ೥͙Β͍͔Β Ruby Ͱ࢓ࣄ͍ͯͧ͘͠એݴ

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ESMΞδϟΠϧࣄۀ෦now • Ruby ʹΑΔγεςϜ։ൃΛߦ͍ͬͯΔϝϯόʔ͸ 21 ໊ • ϕςϥϯͱएख͕ࠞࡏ • ࣗ෼͸ϕςϥϯͱएखͷத͙ؒΒ͍(ͱ͓΋ͬͯΔ

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೔ʑͷ࢓ࣄ

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Ӭ࿨ͷ࢓ࣄͱͯ͠΍Δ͜ͱ • Ҋ݅ަবͷஈ֊ͷଧͪ߹Θͤ΍ݟੵ΋Γ • νʔϜϝϯόʔͷબఆ • ϓϩδΣΫτͷӡӦɺ݉։ൃ

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ׂѪ

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೔ʑͷϓϩδΣΫτͷ ։ൃͷࡍʹ΍͍ͬͯΔ͜ͱ ҙ͍ࣝͯ͠Δ͜ͱ

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ීஈ΍͍ͬͯΔ͜ͱ • ಋೖ͢ΔϥΠϒϥϦ΍ϛυϧ΢ΣΞͷબఆͱ൑அ • ίʔυϨϏϡʔ • ϓϩδΣΫτΛ௒͑ͯར༻Ͱ͖ΔΑ͏ʹ͢Δ

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ϛυϧ΢ΣΞ΍ϥΠϒϥϦͷબఆ • ӡ༻ɾอकΛ୭͕΍Δ͔Λߟ͑Δ • ՄೳͳݶΓܾఆΛ஗ΒͤΔ

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ྫ) background job ʹԿΛ࢖͏͔ • sucker_punch Λ͍ΕͯɺՄೳͳݶΓ ActiveJob Ͱ࣮ݱͰ͖Δ ൣғͰϓϩδΣΫτΛਐΊΔ • γεςϜͷ͜ͱ͕Θ͔͖ͬͯͨ͋ͨΓͰɺ͜ͷ··͢͢ΊΔ͔ɺ DB ΛΩϡʔͱͯ͠࢖͏΋ͷʹ͢Δ͔ɺ

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ίʔυϨϏϡʔ • ߟྀ࿙Εͷέʔε΍ύϑΥʔϚϯεʹؔΘΓͦ͏ͳ఺͕ͳ͍͔ Λ֬ೝ • ҙਤ͕ͪΌΜͱ఻ΘΔίϝϯτΛ৺͔͚Δ • ࣗ෼͕ड͚ೖΕΔ֮ޛ͕΋ͯΔ͔Ͳ͏͔

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ίʔυϨϏϡʔ͸ΏΔΊ • ઃܭ΍ํ਑͸ࣄલʹνʔϜͰ͢Γ͋ΘͤΔ • ίʔυϨϏϡʔͰݫ͍͠ײ͡ʹͳΔͷ͸ɺͦ͜·Ͱʹ໰୊͕͋ Δͱࢥ͍ͬͯΔͷͰɺͦ͜Λ௚͍͚ͯ͠ΔΑ͏ʹ͢Δ • ҰఆྔͷࢦఠΛ͠ͳ͍ͱ͍͚ͳ͍ͱ൑அͨ͠ΒɺϨϏϡʔΛࣙ ΊͯҰॹʹ΍Δͱ͍͏͜ͱΛબ୒͢Δ

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ϓϩδΣΫτΛ௒͑ͯར༻Ͱ͖ΔΑ͏ʹ͢ Δ • ϓϩδΣΫτͷίʔυΛॻ͖ͳ͕Βɺ൚༻తʹͰ͖ͦ͏ͳՕॴ Λgemʹ੾Γग़ͯ͠ΈΔ • ࣮ࡍɺ·ͨ࢖͏͔Ͳ͏͔͸ޒ෼ޒ෼ • େ࡞͡Όͳͯ͘΋࡞Δ͜ͱΛ༏ઌ

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͜͏͍͏ϨϕϧͰgemʹ͍ͯ͠Δ • esminc/operate_do • AS::CurrentAttributes Έ͍ͨͳͷΛ࣮ݱ͢Δ΍ͭ • esminc/jis_x_0401 • JISX0401ͷͨΊͷϥΠϒϥϦ • esminc/s3_reproxy_download • S3 ʹ͋ΔϑΝΠϧΛ X-REPROXY-URL Λ࢖ͬͯฦͤΔΑ͏ʹ͢Δ

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΍͍ͬͯͯͲ͏͔ • ʮҙຯ͋ΔΜͰ͔͢ʯͱ͔ʮηϯεͳ͍ʯΈ͍ͨͳ͜ͱΛݴΘ ΕΔ͜ͱ͸͋Δ • ͜͏͍͏͜ͱ͕Ͱ͖ΔϑοτϫʔΫͷܰ͞Λࣗ෼Ͱ͸΋͍ͬͯ ͍ͨ • ෑډͷ௿͞Λԋग़ͯ͠ɺଞͷਓʹ΋΍ͬͯ΋Β͑ΔΑ͏ʹͨ͠ ͍

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৽͍͠஥͕͖ؒͨͱ͖

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Ӭ࿨ଜʹ͋ͨΒ͍͠஥͕ؒ΍͖ͬͯͨ • ΍ͬͯ͘Δස౓͸೥ 1, 2 ਓ͙Β͍(৽ଔআ͘ • Ruby ͷ͓࢓ࣄܦݧ͸௿Ί • ҟۀछస৬΋

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ΦϯϘʔσΟϯάࣄ৘

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ΦϯϘʔσΟϯάࣄ৘ "

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ܾΊΒΕͨ΋ͷ͕ͳ͍ཧ༝ • ਓʹΑͬͯঢ়گ͕ҧ͏ • ೖࣾλΠϛϯάʹΑͬͯࣾ಺ঢ়گ͕ҧ͏ • Railsʹର͢Δڭҭࢿྉ͸ੈͷதʹ͋ΔͷͰࣗ࡞͢ΔϞνϕʔ γϣϯ͕௿͍

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Ͱ͸ɺͲ͏͍ͯ͠Δ͔ • ೖࣾ౰೔΍Δ͜ͱ౳͸ܾ·͓ͬͯΓ์ஔ͍ͯ͠ΔΘ͚Ͱ͸ͳ͍ • ϓϩδΣΫτͷঢ়گ΍ͦͷϓϩδΣΫτͷϝϯόʔΛΈͯɺ͜ ͷਓ͕͍ΔͳΒ҆৺ͱ͍͏ϓϩδΣΫτͰͷ OJT

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Θ͕ͨ͠ΈΔͱ͖ͷํ਑ • ଞͷνʔϜʹ഑ଐ͞Ε͔ͯΒɺ৽͍͠ϝϯόʔͱͦͷϓϩδΣ ΫτͷνʔϜ͕ࠔΒͳ͍Α͏ʹ͍ͨ͠ • ද໘తͳٕज़ཁૉͳͲ͸ϓϩδΣΫτʹΑͬͯҧ͏ͷͰɺͦΕ ΒΛࢧ͑Δ౔୆ͱͳΔ஌ࣝ΍ߟ͑ํΛ·ͣ਎ʹ͚ͭͯཉ͍͠

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ϓϩδΣΫτʹೖͬͯࠔΔ͜ͱ • Ruby on Rails ͷίʔυ͕ॻ͚Δॻ͚ͳ͍͔ΑΓ΋ɺίϛϡχ έʔγϣϯ͕ͱΕͳ͍͜ͱ͕໰୊ͱͳΔ͜ͱ͕ଟ͍ • ϕςϥϯ΍Ϧʔμʔͱͷ஌ࣝ΍ߟ͑ํͷΪϟοϓʹΑΓൃੜ͠ ͯͦ͏

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ࠔΒͳ͍Α͏ʹͳΔͨΊʹ • Θ͔Βͳ͍͜ͱΛͪΌΜͱ఻͑ΒΕΔΑ͏ʹͳΔ • λεΫͷݟੵ΋Γͱܭը͕Ͱ͖Δ • ࢓ࣄΛָ͘͠Ͱ͖ΔΑ͏ʹͳΔ

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Θ͔Βͳ͍͜ͱΛ఻͑Δٕज़͸ॏཁ • Θ͔Βͳ͍͜ͱΛͪΌΜͱ఻͑Δͷ͸೉͍͠ • Θ͔Βͳ͍͜ͱ͕͋ΔͱɺͦͷΘ͔Βͳ͍··૬ஊͯ͠͠·͏ • ͦͷཻ౓͕େ͖͗͢Δͱɺฉ͖ख΋Կ͕Θ͔Βͳ͍ͷ͔Θ͔Β ͣରԠ͕Ͱ͖ͳ͍

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Θ͔Βͳ͍͜ͱΛཧղ͠఻͑ΒΕΔΑ͏ʹ • ໰୊Λ੔ཧͯ͠ɺ੾Γ෼͚ɺখ͘͞෼ղͰ͖ΔΑ͏ʹҙࣝͤ͞ Δ • ࣭໰Λͯ͠ɺҙ͍ࣝͯ͠ͳ͔ͬͨͱ͜ΖΛ͋ͿΓͩ͢ • ࢖͍ͬͯΔ༻ޠ͕ਖ਼͍͔͠ͷ֬ೝ

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λεΫͷݟੵ΋Γͱܭը͕Ͱ͖Δ • ݟੵ΋Γ͕Ͱ͖Δͱ͍͏͜ͱ͸ɺͦͷλεΫΛͲ͏͢Ε͹΍Ε Δ͔ͱ͍͏͜ͱ͕Θ͔Δͱ͍͏͜ͱ • ܭը͕Ͱ͖Δͱ͍͏͜ͱ͸ɺΞϥʔτΛ͋͛ΔλΠϛϯάΛࣗ ෼Ͱ൑அͰ͖Δ

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Կނݟੵ΋ΓͱܭըΛॏࢹ͢Δ͔ • ࣌ؒ͸༗ݶͳͷͰɺظ଴͢ΔظؒͰऴΘΔ͔ͱ͍͏͜ͱʹେ͖ ͍ؔ৺͕ΑͤΒΕΔ • ݟੵ΋ΓʹΑͬͯɺ΍Δ͜ͱ͕໌֬ʹͳͬͨΓɺଞͷਓͱͷҙ ࣝ͋Θ͕ͤͰ͖ΔΑ͏ʹͳΔ • ܭըʹΑͬͯɺࣗ෼͕Ͳ͜ʹ͍ͯɺຊདྷ͸Ͳ͜ʹ͍ͳ͍ͱ͍͚ ͳ͍͔ΛҙࣝͰ͖ΔΑ͏ʹͳΔ

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࢓ࣄ͸ָ͍͠ʁ • ΍Γ͍ͨͱࢥ͍ͬͯͨ͜ͱΛฏ೔னؒʹͰ͖ΔΑ͏ʹͳΔͷͰɺ ؤுΓ͗͢Δ • λεΫΛҰਓͰ׬ᘳʹ͜ͳ͢ͱ͍͏ҙࣝͰΞϥʔτ͕͋͛ΒΕ ๊ͣ͑ࠐΉ • ࢦఠ͞ΕΔ͜ͱ͕஍ຯ

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ଉൈ͖ͱܹࢗ • ద౰ͳλΠϛϯάͰ੠Λ͔͚ͯɺաूதΛආ͚Δ • Rails ΍։ൃํ๏ͳͲͷ෇࿥CͷΑ͏ͳ࿩Λҙࣝతʹ͢Δ • OSS ͷίϯτϦϏϡʔγϣϯνϟϯεΛڭ͑Δ • ϓϩδΣΫτͱؔ܎ͷͳ͍ίʔυΛॻ͍ͯ΋Β͏

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࠷ۙߦͬͨड͚ೖΕ

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۩ମతʹͲ͏͍͏͜ͱΛ΍͔ͬͨ(1) • ࡞ۀΛ෇ᝦͰλεΫ෼ղͯ͠΋Β͍ɺݟੵ΋ΓΛ͠ɺΧϨϯμʔ ʹϚοϐϯάͯ͠ɺຖ೔࣮੷Λ֬ೝ͠ɺݟੵ΋Γɺܭըͷ֬ೝ Λ͢Δ • ௨Γ͕͢ΓͷϝϯόʔʹΞδϟΠϧ΍ TDD ͳͲͷӬ࿨ͷΧϧ νϟʔͷՁ஋ʹͳ͍ͬͯΔ͜ͱͷࡶஊΛͯ͠΋Β͏

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۩ମతʹͲ͏͍͏͜ͱΛ΍͔ͬͨ(2) • ଍Γͳͦ͏ͳ஌͕ࣝΘ͔͖ͬͯͨͱ͜ΖͰɺීஈͷ࡞ۀͱ͸ผ ͷ՝୊(ࠓճ͸ shell ࡞Γ)Λ༩͑Δ • ҧ͏ϓϩδΣΫτʹߦ͘લʹ;Γ͔͑ΓΛͯ͠ɺݱঢ়ͷ֬ೝͱ ࣍΁ͷظ଴Λ఻͑Δ

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ϓϩδΣΫτ֎ͷ׆ಈ

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WebγεςϜ։ൃ͸೉͍͠ • ૿͑ଓ͚Δकඋൣғ • มΘΓଓ͚ΔτϨϯυ • ҠΓมΘΔࣗ෼ͷڵຯ

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ࣗ෼ͷ࢓ࣄʹର͢Δෆ҆ • ࣗ෼ͷಘҙྖҬͰղܾ͍ͯ͠Δ͚ͩͰɺຊ౰ʹͦΕ͕ྑ͍ํ๏ ͩͬͨͷ͔ • Rails + ஌ݟͷͳ͍෼໺΁ͷϕετϓϥΫςΟε૬౰ͷ͜ͱ͕ਖ਼ ͍͔͠ݕূͰ͖ͳ͍

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RailsʹಛԽͨ͠डୗձࣾͷδϨϯϚ • ઐ໳ՈΛޏ͑ΔΘ͚Ͱ΋ͳ͍ • ϓϩδΣΫτʹϩοΫΠϯ͞ΕΔͱ৽͍͜͠ͱΛܦݧͰ͖ΔՄ ೳੑ͕Լ͕Δ • Կͷٕज़ͷϓϩδΣΫτʹ͋ͨΔͷ͔༧ଌ͕ͨͯΕͳ͍

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ԿނRailsΛࣙΊͳ͍ͷ͔(ݸਓͷݟղ) • ͓٬༷ͷ໰୊Λզʑ͕ૉૣ͘ղܾ͢Δಓ۩ͱͯ͠ ﬁt ͔ͨ͠Β • RubyΛબΜͰ͘ΕΔ͓٬༷ͱ૬ੑ͕Α͍ • RubyίϛϡχςΟ͕޷͖

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ࠓޙ΋RubyͰ࢓ࣄΛ͍ͯͨ͘͠Ίʹ ΑΓ͏·͘ͳ͍͚ͬͯΔΑ͏ʹ

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ͦ͜Ͱ࢝ΊͨऔΓ૊Έ • ۀ຿࣌ؒͷ 10% Λҧ͏࡞ۀʹׂΓ౰ͯΔ࢓૊Έ͕͋Δ • ϓϩδΣΫτ֎ͷϝϯόʔͰνʔϜΛ૊Ή • ࣗ෼ͷڵຯ͕͋Δٕज़ཁૉΛ༻͍ͯԿ͔Λ࡞Δ

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͜ͷऔΓ૊Έͷࢥ࿭ • Ұਓ͕શ෦஌͍ͬͯΔͱ͍͏ͷ͸೉͍͠ͷͰɺ୭͔͕Կ͔Λ஌ͬ ͍ͯΔͱ͍͏ঢ়گΛ࡞Δ • ϓϩδΣΫτͰͰ͖ͳ͍͜ͱΛ΍Δ͜ͱͰ೔ʑͷܹࢗΛ૿΍͢ • ීஈҙࣝ͠ͳ͍ͱࢼͤͳ͍͜ͱΛࢼͯ͠ܦݧ஋ͱͯ͠஝͑ΒΕ ΔΑ͏ʹ͢Δ

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1 ೥ଓ͚ͯΘ͔ͬͨ͜ͱ • ࠷ॳ͸ීஈͷ։ൃʹ͍͚ۙͲख͕·ΘΒͳ͍͜ͱΛҙ͕ࣝͨ͠ɺ ڵຯ͕ͦ͜·Ͱͷ΋ͷΛܧଓ͢Δͷ͸೉͍͠ • औΓ૊ΈͷΰʔϧΛେ͖͗ͨ͘͢͠ • ܖ໿ͱ͕ͯ࣌ؒ֬͠อ͞Ε͍ͯΔͱ͸͍͑ɺϓϩδΣΫτঢ়گ ʹΑͬͯ͸͕࣌ؒ֬อ͞Εͳ͍

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1೥ଓ͚ͨ݁ՌΛ൓লͯ͠ • ੒ՌΛٻΊͳ͍ • ษڧͰऴΘΒͳ͍Α͏ʹ͢Δ • ڵຯͱۀ຿ͷڑ཭Λҙࣝ͢Δ

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2೥໨ͷݱঢ় • 2 ਓνʔϜ͕ 2 ͭͱɺ 1 ਓνʔϜ͕ 1 ͭ • ΍͍ͬͯΔ಺༰͸ɺΠϯϑϥɺϑϩϯτΤϯυɺαʔόϨεͳ Ͳ༷ʑ

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·ͱΊ

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ࣗ෼ͷࠜఈʹ͋Δ͜ͱ • ͪΌΜͱऴΘΒͤͭͭɺ͍͔ʹࣗ෼ָ͕͠ΊΔཁૉΛͭ͘Δ͔ • ࣗ෼ΛԿ͔͠ΒΞοϓσʔτ͍͖͔͚ͯͬ͘͠Λ࡞Δ

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ͪΌΜͱऴΘΒͤͭͭɺָ͠ΊΔΑ͏ʹ • ݱ࣮Λݟͳ͕ΒऴΘΒͤΔ͜ͱ͕ɺΘͨ͠ͷ࢓ࣄ • ࢓ࣄͱ͸͍͑ɺָ͘͠ͳ͍͜ͱ͸͋·Γ΍Γͨ͘ͳ͍ • ͜ΕΛཱ྆͢ΔͨΊʹɺࣗ෼ͷͰ͖Δ͜ͱΛ૿΍͍ͯ͘͠ඞཁ ͕͋Δ

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ΞοϓσʔτΛ͢Δ͖͔͚ͬΛҙࣝ͢Δ • ಉ͡΍ΓํΛ͍ͯ͠Δ͜ͱ͸ɺΑ͍͜ͱ͔ͩΒͳͷ͔ɺଦੑͳ ͷ͔Λߟ͑Δ • ࠓΑΓΑ͍΍Γํ͕͋Δ͔͸ɺҧ͏͜ͱΛ΍ͬͯΈͳ͍ͱΘ͔ Βͳ͍

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େࣄͳ͜ͱ͸RubyɾRailsίϛϡχςΟ͔ ΒֶΜͩ • Ruby΍Railsͷ·ΘΓʹ͍Δਓ͔ͨͪΒɺ͍ΖΜͳܹࢗΛ͏͚ղ ऍͯ͠ɺࣗ෼ͷ΍ΓํΛ໛ࡧ͍ͯ͠Δ • RubyɾRailsίϛϡχςΟͰ͏͚ͨ͜ͱΛฦ͍͚ͯ͠ΔΑ͏ʹࣗ ෼͸ͳ͍͖͍ͬͯͨ

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࠷ޙʹ

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OedoRubyKaigi02 • 2012/02 ʹߦΘΕͨ Asakusa.rb ͷ Meetup • جௐߨԋ͸ୡਓ Dave Thomas • ςʔϚ͸ϥϕϧʹ͍ͭͯ

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https://magazine.rubyist.net/ /articles/0039/ 0039-MetPragdaveAtAsakusarb.html

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Ruby-ಓ(by Dave Thomas) • OOP ͚͕ͩ།Ұͷํ๏͡Όͳ͍ • खଓ͖ܕ͚͕ͩϓϩάϥϜΛॻͨͬͨ͘Ұͭͷํ๏Ͱ΋ͳ͍ • ”Α͍”ίʔυ͚͕ͩίʔυͳΘ͚͡Όͳ͍ • Ruby͕࠷্ͷϓϩάϥϛϯάݴޠͬͯΘ͚͡Όͳ͍ • ͦ΋ͦ΋࠷্ͷϓϩάϥϛϯάݴޠͳΜͯͳ͍

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Α͍ߦಈΛ͠Α͏ by Dave Thomas Έͳ͞Μɺ࿅श͸͍ͯ͠·͔͢ʁɹࣗ৴͸खΛಈ͔ͯ͠࿅श͢Δ͜ ͱ͔Βੜ·Ε·͢ɻ஌͔ࣝΒ͸ੜ·Ε·ͤΜɻ͍ͭ΋Ͳ͏΍ͬͯ࿅श ͨ͠Β͍͍ͩΖ͏ͱߟ͑·͠ΐ͏ɻͦΜͳΘ͚ͰɺΤΩεύʔτͱ ݺ͹ΕΔਓ΍ϕετϓϥΫςΟεɺϥϕϧΛ໡৴͢Δ͜ͱ͸΍Ί·͠ΐ ͏ɻϥϕϧ͸͋ͳͨΛࢥߟఀࢭͤ͞·͢ɻϥϕϧ͸͋ͳͨΛ࿮ʹ͸Ί ·͢ɻϥϕϧ͕͋ͳͨΛڱΊΔ͜ͱʹͳΓ·͢ɻࣗ෼ࣗ਎ʹϥϕϧΛ షΔͷ͸΍Ί·͠ΐ͏ɻ͋ͳ͕ͨԿऀ͔͸͋ͳ͕ͨԿΛ͢Δ͔Ͱܾ ·Γ·͢ɻ໊ࢺͰ͸ͳ͘ಈࢺͰ͍·͠ΐ͏ɻΑ͍ߦಈΛ͠·͠ΐ͏ʂ