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઒ౡܛ(.01FQBCP *OD 1)1ษڧձ ʮ40-*%ͷݪଇͬͯԿͰ͔͢ʁʯ ࣭ͬͯ໰ʹ౴͔͑ͨͬͨ

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ΞϓϦέʔγϣϯΤϯδχΞ ઒ౡܛ!OB[POPIJUP 4)ࣄۀ෦+6(&.νʔϜ IUUQOB[POPIJUPKVHFNKQ

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40-*%ͷݪଇ

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Single responsibility principle Open/closed principle Liskov substitution principle Interface segregation principle Dependency inversion principle ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ 40-*%ͷݪଇ

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%FWFMPQFS3PBENBQ IUUQTHJUIVCDPNLBNSBOBINFETFEFWFMPQFSSPBENBQ

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%FWFMPQFS3PBENBQ IUUQTHJUIVCDPNLBNSBOBINFETFEFWFMPQFSSPBENBQ

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Single responsibility principle Open/closed principle Liskov substitution principle Interface segregation principle Dependency inversion principle ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ 40-*%ͷݪଇ

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40-*%ͷݪଇ Single responsibility principle Open/closed principle Liskov substitution principle Interface segregation principle Dependency inversion principle ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ ͬͪ͜͡Όͳͯ͘

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Single responsibility principle Open/closed principle Liskov substitution principle Interface segregation principle Dependency inversion principle ୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ 40-*%ͷݪଇ ͬͪ͜ʂʂʂʂ

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ͭͷݪଇηοτͷBDSPOZNʢ಄ࣈޠʣͰ͋Δ͜ͱҎ֎ Կ΋஌Βͳ͍

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ΘΓͱ౜ಥʹઆ໌͕࢝·Δ

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ಥવฉ͔Εͨ࣌ʹઆ໌͠Α͏ͱ͢Δͱ Ή͍ͣ

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ௐ΂ͨ ˞ॻ੶ΛಡΊ͹෼͔Δൣғ͸ࠓճѻ͍·ͤΜ

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ྺ࢙తܦҢʹ͍ͭͯ

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࡞ͬͨʢൃදͨ͠ʣਓ 3PCFSU$.BSUJO ΞϝϦΧͷιϑτ΢ΣΞΤϯδχΞ 6ODMF#PCʢϘϒ͓͡͞ΜʣͷѪশͰ஌ΒΕΔ ͍͔ͭ͘ͷιϑτ΢ΣΞઃܭݪଇΛ։ൃͨ͠ IUUQTFOXJLJQFEJBPSHXJLJ3PCFSU@[email protected]

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IUUQTHSPVQTHPPHMFDPNGPSVN IMFOUPQJDDPNQPCKFDU8*$1%D9".( ॳग़

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5FO$PNNBOENFOUT ү໺ʂ001ͷ ेռ࡞Ζ͏ͥʂ λΠτϧ༁ɿ

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ΫϥεϞδϡʔϧ͸֦ுʹରͯ͠։͖ɺमਖ਼ʹରͯ͠͸ด͡ͳ͚Ε͹ͳΒͳ͍ʢ#FSUSBOE.FZFSͷΦʔϓϯΫϩʔζυͷݪଇʣ ೿ੜΫϥε͸جຊΫϥεͱަ׵ՄೳͰͳ͚Ε͹ͳΒͳ͍ʢ-JTLPWͷஔ׵ݪଇʣ ৄࡉ͸ந৅ʹґଘ͠ͳ͚Ε͹ͳΒͣɺந৅͸ৄࡉʹґଘͯ͠͸ͳΒͳ͍ʢґଘੑٯసͷݪଇʣ ࠶ར༻ͷཻ౓ͱϦϦʔεͷཻ౓͸ಉ͡ʹ͢΂͖ ಉ͡ཧ༝Ͱมߋ͞ΕΔΫϥε܈ΛҰͭͷίϯϙʔωϯτʹ·ͱΊΔ͜ͱ ίϯϙʔωϯτͷϦϦʔε͞ΕΔ୯Ґͱ࠶ར༻ͷ୯Ґ͸ಉ͡Ͱ͋Δ΂͖ ϦϦʔε͞Εͨίϯϙʔωϯτؒͷґଘؔ܎͸॥؀ͯ͠͸ͳΒͳ͍ ϦϦʔε͞Εͨίϯϙʔωϯτؒͷґଘͷํ޲͸ɺΑΓ҆ఆͨ͠ํ޲ʹ޲͍ͯͳ͚Ε͹ͳΒͳ͍ ΑΓ҆ఆͨ͠ίϯϙʔωϯτ͸ΑΓଟ͘ͷந৅ΫϥεͰߏ੒͞ΕΔ΂͖ ՄೳͳݶΓ࣮ূࡁΈͷύλʔϯΛ࢖༻ͯ͠ઃܭ্ͷ໰୊Λղܾ͢Δ ͭͷύϥμΠϜΛލ͙࣌͸ඞͣ྆ऀΛ෼͚ΔΠϯλʔϑΣʔεϨΠϠʔΛ੾Δ͜ͱ طʹ40-*%ͷݪଇͷݪܕ͕͋ͬͨ 3PCFSU$.BSUJOͷ౤ߘ ˢʂʁ

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ͳΔ΄Ͳɺ40-*%ͷݪଇ͸ 3PCFSU$.BSUJOݸਓͷ੒Ռ෺ͳΜͩͳʁ

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͜ΕΒͷݪଇ͸ɺԿे೥ʹ΋ٴͿઌਓͷܦݧ ͷ஝ੵ͔Βੜ·Εͨιϑτ΢ΣΞ޻ֶͷ੒Ռ Ͱ͋Δɻ͜ΕΒͷ੒Ռ͸Ұਓͷ಄೴͔Βੜ· Εͨ΋ͷͰ͸ͳ͍ɻඇৗʹଟ͘ͷιϑτ΢Σ Ξ։ൃऀ΍ݚڀऀͷࢥࡧ΍࿦จΛूେ੒ͨ͠ ΋ͷͳͷͩɻ ΞδϟΠϧιϑτ΢ΣΞ։ൃͷԞٛ ୈ̎෦ɹΞδϟΠϧઃܭ

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୯Ұ੹೚ͷݪଇ ։์ด࠯ͷݪଇ Ϧείϑͷஔ׵ݪଇ ΠϯλʔϑΣʔε෼཭ͷݪଇ ґଘੑٯసͷݪଇ ൃҊऀɿ#BSCBSB-JTLPW ൃҊऀɿ#FSUSBOE.FZFS ൃҊऀɿ3PCFSU$.BSUJO ൃҊऀɿ3PCFSU$.BSUJO ൃҊऀɿ3PCFSU$.BSUJO ˞5PN%F.BSDPͱ.FJMJS1BHF+POFTͷஶॻʹج͍͍ͮͯΔʁ αϒηοτ͸࡞͚ͬͨͲɺݸݸ͸ҧ͏

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ʮݪଇʯͬͯͳΜͩʁ

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ݪଇ IUUQTEJDUJPOBSZDBNCSJEHFPSHEJDUJPOBSZFOHMJTIQSJODJQMF zಓಙతͳϧʔϧ·ͨ͸ྑ͍ߦಈͷج४z 1SJODJQMF BNPSBMSVMFPSTUBOEBSEPGHPPECFIBWJPVS

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ྑ͍Ҿ༻ݩ͕ݟ͔ͭΒͳ͍

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ಠࣗղऍͰ͕͢ ݪଇͱ͸ ༗ҙͳ۩৅ͷཪʹ ීวతʹྲྀΕΔ๏ଇੑ Λநग़ͨ͠΋ͷ ͱɺଊ͓͑ͯΓ·͢

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۩৅" ۩৅' ۩৅# ۩৅$ ۩৅% ۩৅& ᶃ๏ଇੑΛநग़ ᶄ๏ଇੑʹैͬͯ࡞੒ ݪଇ

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۩৅" ۩৅' ۩৅# ۩৅$ ۩৅% ۩৅& ᶃ๏ଇੑΛநग़ ᶄ๏ଇੑʹैͬͯ࡞੒ ݪଇ ಉ༷ͷੑ࣭Λ͍࣋ͬͯΔ͜ͱ͕ظ଴Ͱ͖Δ

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ྑ͍ઃܭͷίʔυ" ʢͨͿΜྑ͍ઃܭͷʣ ίʔυ' ˞ྑ͍Ҿ༻ݩ͕ݟ͔ͭΒͳ͔ͬͨͷͰࢲݸਓͷਪଌͱͳΓ·͢ ྑ͍ઃܭͷίʔυ# ྑ͍ઃܭͷίʔυ$ ྑ͍ઃܭͷίʔυ% ྑ͍ઃܭͷίʔυ& ᶃ๏ଇੑΛநग़ ᶄ๏ଇੑʹଇͬͨίʔυͷ࡞੒ 40-*%ͷݪଇ

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ʮྑ͍ઃܭʯJT $MFBO"SDIJUFDUVSF ୈ***෦ɹઃܭͷݪଇ มߋʹڧ͍͜ͱ ཧղ͠΍͍͢͜ͱ ίϯϙʔωϯτͷج൫ͱͯ͠ɺଟ͘ͷιϑτ΢ΣΞγεςϜͰར༻Ͱ͖Δ͜ͱ

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40-*%ͷݪଇ͸ զʑϓϩάϥϚ͕ ९क͢΂͖ϧʔϧͳͷ͔ʁ

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IUUQTTJUFTHPPHMFDPNTJUFVODMFCPCDPOTVMUJOHMMDHFUUJOHBTPMJETUBSU

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40-*%ͷݪଇ͸ϧʔϧͰ͸͋Γ·ͤΜ͠ɺ ๏Ͱ͸͋Γ·ͤΜ͠ɺ׬શͳਅ࣮Ͱ΋͋Γ·ͤΜɻ ʮϦϯΰ೔ݸͰҩऀ஌Βͣʯͱ͍͏ݵ͕͋Γ·͢ɻ ͜Ε͸ྑ͍ݪଇͰ͋Γɺྑ͍ΞυόΠεͰ͕͢ɺ ͦΕ͸७ਮͳਅ࣮Ͱ͸ͳ͘ɺ·ͨϧʔϧͰ΋͋Γ·ͤΜɻ ʢ˞40-*%ͷݪଇ΋ͦ͏͍͏΋ͷͰ͋Δͱݴ͍͍ͨΜͩͱࢥ͏ʣ 5IF40-*%QSJODJQMFTBSFOPUSVMFT5IFZBSFOPUMBXT5IFZBSFOPUQFSGFDUUSVUIT5IFBSFTUBUFNFOUTPOUIFPSEFSPG l"OBQQMFBEBZLFFQTUIFEPDUPSBXBZz5IJTJTBHPPEQSJODJQMF JUJTHPPEBEWJDF CVUJU`TOPUBQVSFUSVUI OPSJTJUB SVMF

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cubby-holes 5IFQSJODJQMFTBSFNFOUBMDVCCZIPMFT5IFZHJWFBOBNFUPBDPODFQUTPUIBUZPVDBOUBMLBOESFBTPOBCPVUUIBU DPODFQU5IFZQSPWJEFBQMBDFUPIBOHUIFGFFMJOHTXFIBWFBCPVUHPPEBOECBEDPEF ͜ͷݪଇͨͪ͸৺ͷ੔ཧ୨ͳͷͰ͢ɻ ͜ΕΒ͸֓೦ʹର໊ͯ͠લ෇͚ͯ͘͠ΕΔͷͰɺ ͋ͳͨ͸֓೦ʹ͍ͭͯ࿩ͨ͠Γߟ͑ͨΓ͢Δ͜ͱ͕Ͱ͖ΔΑ͏ʹͳΓ·͢ɻ ͜ΕΒ͸ࢲ͕ͨͪྑ͍ίʔυͱѱ͍ίʔυʹ͍͍ͭͯ࣋ͬͯΔ ײ৘ͷ੔ཧ৔ॴΛఏڙ͠·͢ɻ

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5IFTFQSJODJQMFTBSFIFVSJTUJDT5IFZBSFDPNNPOTFOTFTPMVUJPOTUPDPNNPOQSPCMFNT5IFZBSFDPNNPOTFOTF EJTDJQMJOFTUIBUDBOIFMQZPVTUBZPVUPGUSPVCMF#VUMJLFBOZIFVSJTUJD UIFZBSFFNQJSJDBMJOOBUVSF5IFZIBWFCFFO PCTFSWFEUPXPSLJONBOZDBTFTCVUUIFSFJTOPQSPPGUIBUUIFZBMXBZTXPSL OPSBOZQSPPGUIBUUIFZTIPVMEBMXBZT CFGPMMPXFE ͜ΕΒͷݪଇ͸ώϡʔϦεςΟοΫͰ͢ɻ ͜ΕΒ͸Ұൠతͳ໰୊ʹର͢ΔৗࣝతͳղܾࡦͰ͋Γɺ ͋ͳ͕ͨτϥϒϧ͔Βൈ͚ग़͢ͷΛॿ͚Δ͜ͱ͕Ͱ͖ΔৗࣝతͳڭཆͰ͢ɻ ͔͠͠ɺώϡʔϦεςΟοΫͱಉ͡Α͏ʹɺ ͜ΕΒ͸ຊ࣭తʹܦݧଇʹجͮ͘΋ͷͰ͢ɻ ͜ΕΒͷݪଇ͕ଟ͘ͷ৔߹ʹػೳ͢Δ͜ͱ͕෼͔͍ͬͯ·͕͢ɺ ৗʹػೳ͢Δͱ͍͏ূڌ΋ɺ ͜ΕΒʹৗʹै͏΂͖Ͱ͋Δͱ͍͏ূڌ΋͋Γ·ͤΜɻ

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ϧʔϧͱ͍͏ΑΓɺ ࢦ਑ ͬͯ දݱͯ͠͠·ͬͨํ͕ޡղ͸গͳͦ͏ ΨΠυϥΠϯ

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·ͱΊ w40-*%ͷݪଇ͸3PCFSU$.BSUJO͕·ͱΊͨ΋ͷ wྑ͍ઃܭͷ๏ଇੑΛநग़ͨ͠΋ͷͰɺݪଇΛҙࣝͨ͠ίʔυΛॻ͘͜ ͱʹΑͬͯྑ͍ઃܭͷίʔυʹͳΔ͜ͱ͕ظ଴Ͱ͖Δ wࣗ෼ͷߟ͑Λ੔ཧͨ͠Γɺઃܭͷྑ͠ѱ͠Λ൑அͨ͠ΓɺνʔϜͷڞ ௨ݴޠج൫ʹͳΔͳͲͷޮՌ΋ظ଴Ͱ͖Δ w໡໨తʹै͏΂͖ϧʔϧͱ͍͏΋ͷͰ͸ͳ͘ɺࢀߟʹ͢Δͱ޾ͤʹͳ ΔΨΠυϥΠϯఔ౓ͷظ଴ײͰࢀর͢Δͱྑͦ͞͏

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·ͱΊ w40-*%ͷݪଇ͸3PCFSU$.BSUJO͕·ͱΊͨ΋ͷ wྑ͍ઃܭͷ๏ଇੑΛநग़ͨ͠΋ͷͰɺݪଇΛҙࣝͨ͠ίʔυΛॻ͘͜ ͱʹΑͬͯྑ͍ઃܭͷίʔυʹͳΔ͜ͱ͕ظ଴Ͱ͖Δ wࣗ෼ͷߟ͑Λ੔ཧͨ͠Γɺઃܭͷྑ͠ѱ͠Λ൑அͨ͠ΓɺνʔϜͷڞ ௨ݴޠج൫ʹͳΔͳͲͷޮՌ΋ظ଴Ͱ͖Δ w໡໨తʹै͏΂͖ϧʔϧͱ͍͏΋ͷͰ͸ͳ͘ɺࢀߟʹ͢Δͱ޾ͤʹͳ ΔΨΠυϥΠϯఔ౓ͷظ଴ײͰࢀর͢Δͱྑͦ͞͏ ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠