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黒歴史リポジトリを使ったリファクタリング勉強法のススメ
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fuqda
August 13, 2019
Programming
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黒歴史リポジトリを使ったリファクタリング勉強法のススメ
Otemachi.rb#20の発表資料です。
リファクタリングを利用した勉強方法の話をします。
fuqda
August 13, 2019
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Transcript
ࠇྺ࢙ϦϙδτϦΛ ͬͨϦϑΝΫλϦϯά ษڧ๏ͷεεϝ ɹɹɹɹɹɹɹɹ fuqda(@fuqda90) 2019.08.14(Wed) Otemachi.rb#20
ࣗݾհ Tama.rb Organizor Work @ STORES.jp, inc. RubyͰ!Λ৯ΔΑ͏ʹͳΓ2Ͱ͢ Twitter
: fuqda(@fuqda90) Github : Shigeyuki-fukuda (JU)VC
ࠓͷ
࣮ۙફͨ݁͠Ռ ޮՌ͕͋ͬͨΦεεϝ ษڧ๏ͷ"
ʲ࣭ʳ ٕज़ॻಡΜͩޙ ࣮ફͯ͠·͔͢ʁ
ʲ࣭2ʳ ಡΜ͚ͩͩͩͱʹ͍͔ͨෆ҆… ͱ͍͏͔…Ε·ͤΜ͔? (ͪͳΈʹͦ͏Ͱ͢#)
ؾܰʹຊͰֶΜͩ༰Λ ࣮ફ͍ͨ͠
(࠷ѱյΕͯྑ͍ΞϓϦͰ$)
ͦ͜ͰΦεεϝ͍ͨ͠ʂ
ۦ͚ग़͠ͷࠒʹॻ͍ͨίʔυ (ࠇྺ࢙ϦϙδτϦ)ͷ ϦϑΝΫλϦϯά %✨
ཧ༝
୯७ʹϦϑΝΫλϦϯάग़དྷΔ༨͕ଟ͍ →͢༨͕গͳ͍ͱ࡞ۀͯͯͭ͠·Βͳ͍ͷͰ ɹۃʹ伱ͩΒ͚ͷίʔυΛϘίϘίʹ͘͢Β͍͕ ɹࡐͱͯ͠ྑ͍ ษڧΛͨ͠ݱ࣌ͱ͢Δલͷ͕ࠩ໌֬ →Ͳͷ͘Β͍ʹ͍͍ͯΔ͔ʁΛ͕ࣝͳ͔ͬͨࠒ ɹͱൺΔ͜ͱͰݱঢ়ͷཧղͷѲʹཱͪͦ͏
ͬͱݴ͏ͱ ϖΞϓϩͰΔͷΛ Φεεϝ͍ͨ͠✋
ϖΞϓϩͰΔํ͕͍͍ཧ༝ ࢥߟͷཧ͕ग़དྷΔ →ҰਓͩͱԿͱͳͬͪ͘͜ͷίʔυͷํ͕ྑ͍͔Βͱ ɹᐆດʹ͢Δͱ͜ΖΛ૬ख͕͍ΔͱԿނͦͷॻ͖ํ͕ ɹྑ͍ͷ͔Λઆ໌͢Δඞཁ͕ग़ͯ͘Δʂ ɹͦͷͨΊઆ໌ͷաఔͰᐆດͳཧղʹؾ͚ͯྑ͍ →૬खͱࣗͰΞϓϩʔν͕ҧ͏໘͕͋ΔͣͳͷͰ ɹͦΕ͕ͦͷ··ֶͼʹͳΔ
࣮ࡍʹ͍ͬͯͬͨ͜ͱ
Tama.rbͷ˞ࣗݾհ༻ΨνϟΞϓϦͷ ϦϑΝΫλϦϯά ※Tama.rbؔऀͷࢯ͕ۦ͚ग़͠ͷࠒʹ ࡞ͬͨΞϓϦΛڐՄΛΒͬͯ͢͜ͱʹ… ϝϯόʔ @fuqda @ken3ypa
ʲΞϓϦ֓ཁʳ ࣗݾհΨνϟ ɾQuestion(࣭) ɾConjunction(ଓࢺ) ɾTheme(ςʔϚ) ͜ΕΒͷΧςΰϦʔʹ֘͢ΔొϫʔυΛ ΨνϟͷΑ͏ʹҾ͍ͯ ϥϯμϜͰը໘ʹදࣔ͠ ͦΕΛݩʹࣗݾհͯ͠Β͏ΞϓϦ
ϦϑΝΫλϦϯάͷΰʔϧ ៉ྷͳίʔυʹ͢(ͦΕ͚ͩ͡Όͳ͍) ⭕ ۦ͚ग़͔͠Βࠓ·ͰֶΜͩΦϒδΣΫτ ࢦͷΞϨίϨ֤छॻ੶ͷֶश༰Λ Ξτϓοτग़དྷΔ͔ΛϦϑΝΫλϦϯά ͷதͰ֬ೝ͢Δ͜ͱ
ϦϑΝΫλϦϯά͢Δ ্ͰνΣοΫ߲ͨ͠
ɾ໋໊ͷଥੑνΣοΫ ɹ (Ϋϥε໊ɾϝιου໊ɾΧϥϜ໊etc…) ͦͷ໊લͰΘΔʁ ex)ͱ͋ΔϕϯνϟʔاۀͰϗϯτʹ͋ͬͨා໋໊͍ class EmailMailer →Կʹର͢Δϝʔϧ͕͍ͨ͠Ϋϥεͳͷ͔શ͘ΘΒΜ ͗͢Δ໋໊͡Όͳ͍ʁ ex)
Ϋϥε໊ɿGroup, Operation →໊͍લʹprefix͕ඞཁͦ͏ γεςϜ্Ϳ͔ͭΔ໊લ͡Όͳ͍ʁ ex) ΧϥϜ໊ɿsize, count →ͦͷੲϑΝογϣϯܥαʔϏεͰͷαΠζΛsizeͱ͍͏ ΧϥϜͰཧͨ͠ͱ͜ΖORϚούʔͷ෦ͷϝιουͱ Ϳ͔ͭͬͯҙਤ͠ͳ͍ڍಈΛͨ͜͠ͱ͕͋ͬͨͦ͏ͳ
ɾΫΤϦͷଥੑνΣοΫ
ɾϞσϦϯάͷଥੑνΣοΫ ຊʹ͜ͷϞσϧඞཁʁ →QuestionϞσϧҰͭʹ ɹ ActiveRecord::EnumΛੜͯ͠ཧ͢Ε ɹ Conjunction(ଓࢺ)ͱ ɹ ThemeϞσϧෆཁͳͷͰʁ ※Πϝʔδ
enum category: { conjunction: 0, theme: 1 }
ɾRailsత/OOPత͔νΣοΫ ͕దʹׂ͞ΕͯΔʁ →AΫϥε͕BΫϥεͷதͷॲཧΛΓա͗ͯͳ͍͔ →ԿͰͷαʔϏεΫϥεͱ͔࡞ͬͯͨΒຣࡴ(ࠓճແ͠) ͜ͷ࣮ͳ͍ͱμϝʁ →ෳͷϞσϧͰڞ௨ͨ͠ॲཧ͕ ɹActiveSupport::Concernʹ·ͱΊΒΕ͍͕ͯͨ ͦͦແବͳϞσϧΛআͨ͠Β ActiveSupport::Concern͍Βͳ͘ͳ͍ʁ^_^; ɹ➡
ຣࡴ
૯
ɾϦϑΝΫλϦϯάͰग़ͯ͘ΔΞΠσΞ ɹͦͷͷ͕ࠓͷࣗͷ࣮ྗ ɾۀͩͱେਓͷࣄͰϦϑΝΫλϦϯάʹ ɹͳ͔ͳ͔खΛ͚ΒΕͳ͍͔ͳͷͰ… झຯͷίʔυͰͿͬյ͠ͳ͕ΒֶΜͰ ɹۀίʔυʹөग़དྷͨΒྑͦ͞͏✨ ɾϖΞϓϩɾϞϒϓϩͰࠓճͷΑ͏ͳϦϑΝΫλϦϯάΛ ͢Δͱ୯७ʹָ͍͠ & ษڧʹͳΔͷͰ
ʑͷֶशϚϯωϦଧഁʹ͓ࢼ͋͠Ε
͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠3 ͝ਗ਼ௌ