すばやく実装するための戦略とテクニック

by Hiromi Hishida

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͢͹΍࣮͘૷͢ΔͨΊͷઓུͱ ςΫχοΫ 1)1ΧϯϑΝϨϯεؔ੢ !XFC

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ɾ!XFC ɾϑϦʔϥϯεʢ೥͙Β͍ʣˠΧϧςοτίϛϡχέʔγϣϯζʢ೥ʣ ɾ໊ݹ԰ ɾࣇͷ฼ ɾ೔ຊ4ZNGPOZϢʔβʔձ ɾ$PEFS%PKP໊ݹ԰ॳ୅νϟϯϐΦϯʢॾࣄ৘͋ͬͯҾୀʜʣ ɾ*—1)1

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ɾӡ༻ܕ޿ࠂۀքΛϗϫΠτʹ͢Δ࢓૊ΈΛ࡞ͬͯ·͢ ɾ஥ؒืूதʂʢϑϧϦϞʔτɺύʔτλΠϜɺ΋ͪΖΜϑ ϧλΠϜਖ਼ࣾһ΋׻ܴʣ

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଎͞͸ྗ

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଎͍ͱԿ͕خ͍͠ʁ

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଎͍ͱԿ͕خ͍͠ʁ w ؒҧͬͯ΋मਖ਼͢Δ͕࣌ؒ͋Δ

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଎͍ͱԿ͕خ͍͠ʁ w ؒҧͬͯ΋मਖ਼͢Δ͕࣌ؒ͋Δ w ৺ͱ਎ମͷ༨༟

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଎͍ͱԿ͕خ͍͠ʁ w ؒҧͬͯ΋मਖ਼͢Δ͕࣌ؒ͋Δ w ৺ͱ਎ମͷ༨༟ w ࣍ͷ͜ͱΛษڧ͢Δ͕࣌ؒͰ͖Δ

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଎͍ͱԿ͕خ͍͠ʁ w ؒҧͬͯ΋मਖ਼͢Δ͕࣌ؒ͋Δ w ৺ͱ਎ମͷ༨༟ w ࣍ͷ͜ͱΛษڧ͢Δ͕࣌ؒͰ͖Δ w ʢ͓·͚ʣ৽ػೳʹΞαΠϯ͞Ε΍͍͢

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଎͞Λ๦͛Δ΋ͷ͸ͳʹ͔ʁ

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଎͞Λ๦͛Δ΋ͷ͸ͳʹ͔ʁ

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଎͞Λ๦͛Δ΋ͷΘ͔Βͳ͞ w ϑϨʔϜϫʔΫ΍ϥΠϒϥϦͷ࢖͍ํ͕Θ͔Βͳ͍ w Ͳ͏͍͏ॲཧΛॻ͍ͨΒ࢓༷Λ࣮ݱͰ͖Δ͔Θ͔Βͳ͍ w ࣮૷ʹͲΕ͙Β͍͕͔͔࣌ؒΔ͔Θ͔Βͳ͍ w ॲཧͷϘτϧωοΫ͕Ͳ͜ʹͳΔ͔Θ͔Βͳ͍ w ٻΊΒΕΔ࢓༷͕Θ͔Βͳ͍ɾܾ·ͬͯͳ͍

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Θ͔Βͳ͞ΛݮΒͤ͹౗͠΍͍͢ʹ଎͘Ͱ͖Δ

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ઓུɿ෼ׂ౷࣏๏

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෼ׂ౷࣏๏ͱ͸ʁ w EJWJEFBOEDPORVFSNFUIPE w ͦͷ··Ͱ͸࣮૷͕೉͍͠େ͖ͳ໰୊Λখ͞ͳ໰୊ʹ෼ׂ͢Δ͜ͱͰ࣮૷͠΍͘͢͢Δํ๏ʢϓ ϩάϥϜ༻ޠʣ w Θ͔Βͳ͞Λ࡟Γͳ͕Β࣮૷͍ͯ͘͠

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෼ׂ౷࣏๏࣮ફςΫχοΫ w දΛΠϝʔδͯ͠ཪ͔Β࡞Δ w ૪͍ͷͳ͍΋ͷ͔Β࡞Δ

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දΛΠϝʔδͯ͠ཪ͔Β࡞Δ

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දΛΠϝʔδͯ͠ཪ͔Β࡞Δ w JOUFSGBDFΛ׆༻ w ද͔Βཪʹରͯ͠΍ͬͯ΄͍͜͠ͱʢԿΛड͚औͬͯԿΛฦͯ͠΄͍͔͠ʣ͚ͩΛఆٛ͢Δ 6* BQQ EPNBJO JOGSB %#&YUFSOBM"1*

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૪͍ͷͳ͍෦෼͔Β࡞Δ

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૪͍ͷͳ͍෦෼͔Β࡞Δ w ϓϩδΣΫτશମͱͯ͠Θ͔Βͳ͍෦෼Λগ͠Ͱ΋ݮΒ͍ͯͨ͘͠ΊʹɺΘ͔͍ͬͯΔ෦෼͔ Βίʔυʹ͍ͯ͘͠ w ࣮૷։࢝࣌఺Ͱ࢓༷͕ܾ·͍ͬͯͳ͍෦෼͸ɺޙͰΨϥοͱมΘΔ͔΋͠Εͳ͍ w ֎తཁҼ w ಺తཁҼ w ͋ͱͰมΘΔ͔΋͠Εͳ͍΋ͷΛϕʔεʹ͠ͳ͍

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࣮ࡍʹ΍ͬͯΈ·͠ΐ͏

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ཁ݅ w ސ٬ి࿩ாΞϓϦ w ߲໨͸ి࿩൪߸ɺձ໊ࣾɺ୲౰ऀ໊ɺࣗࣾͷ୲౰ऀ໊ɺҊ໊݅ɺϝϞ w ి࿩൪߸ͱΩʔϫʔυͰݕࡧ w ి࿩൪߸͸લํҰக w Ωʔϫʔυ͸෦෼Ұக w ϝϞҎ֎ͷςΩετ߲໨Λݕࡧ w σʔλอଘܗଶ͸ະఆʢͲΕͰ΋ରԠͰ͖ΔΑ͏ʹʣ

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TUFQදͷΠϝʔδ දΛΠϝʔδͯ͠ཪ͔Β࡞Δ

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TUFQ෼͚ํΛߟ͑Δ ݕࡧ৚݅Ϗϧμ ސ٬ݕࡧ දΛΠϝʔδͯ͠ཪ͔Β࡞Δ

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TUFQදΠϝʔδΛ͋Δ΂͖࢟΁मਖ਼ ސ٬ݕࡧΞϓϦ දΛΠϝʔδͯ͠ཪ͔Β࡞Δ

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TUFQ֎ଆͷΠϝʔδΛ͋Δ΂͖࢟΁मਖ਼ ͭͷϑΝΠϧͷ੹຿Λͭʹͨ͠Β͍͍ͩͨ0, දΛΠϝʔδͯ͠ཪ͔Β࡞Δ

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TUFQJOUFSGBDFͰද͔Βͷར༻ΠϝʔδΛͦͷ··ॻ͍ͯΈΔ ྑͦ͞͏Ͱ͢Ͷ දΛΠϝʔδͯ͠ཪ͔Β࡞Δ

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ࠓճͷ৔߹͸༳Εಈ͖ͦ͏ͳͷ͸ݕࡧͷ࢓༷ɻ ͳΒɺ@(&5͔ΒDVTUPNFS$SJUFSJBΛ࡞Δ$SJUFSJB#VJMEFS͔Β࡞Δɻ ૪͍ͷͳ͍΋ͷ͔Β࡞Δ TUFQ૪͍ͷͳ͍෦඼Λ࡞Δ

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TUFQ૪͍ͷ͋Δ෦඼Λ࡞Δ $VTUPNFS4FBSDITFBSDI ͷΠϝʔδΛߟ͑Δɻ 3%#ͩͱ42-ݸॻ͍ͯ1%0ʹͭͬ͜Ή͚͔ͩͩΒָͰ͢Ͷɻ Ͱ΋ର৅͕഑ྻ΍$47ͩͱʜʁ ސ٬σʔλιʔε දΛΠϝʔδͯ͠ཪ͔Β࡞Δ

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TUFQ૪͍ͷ͋Δ෦඼ͷΠϝʔδΛJOUFSGBDFͰॻ͍ͯΈΔ ݕࡧͷ࢓༷͕มΘͬͨΒ͚ͩ͜͜ม͑Ε͹ྑ͍ ˞ຊ౰͸͜ͷล΋͏ͪΐͬͱ෼ׂ͍ͨ͠ දΛΠϝʔδͯ͠ཪ͔Β࡞Δ

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TUFQ૪͍ͷ͋Δ෦඼Ͱ࢖͏ͨΊͷ෦඼Λ࡞Δ ͱΓ͋͑ͣ"SSBZͷ%BUB4PVSDFΛॻ͍ͨ

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TUFQ෦඼͕ἧͬͨͷͰ૊Έཱͯͯಈ͔ͯ͠ΈΔ

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TFBSDIQIQ $VTUPNFS4FBSDI"QQ $VTUPNFS4FBSDI JOGSB %#&YUFSOBM"1* $VTUPNFS%BUB4PVSDF $VTUPNFS$SJUFSJB#VJMEFS $VTUPNFS$SJUFSJB ද ཪ

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EFNP

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TUFQԠ༻ฤσʔλอଘઌ͕3%#ʹมΘͬͨͱ͖ ͋Ε͚ͩҰੜݒ໋ॻ͍ͨ$VTUPNFS4FBSDIͷߜΓࠐΈॲཧ͸ࣺͯ·ͨ͠

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ͦͷଞ଎౓Λ্͛ΔςΫχοΫ ྑ͍ಓ۩Λ࢖͏ ɹ͜ΘΕʹ͍͘ ɹؒҧ͑ʹ͍͘ ɹख਺͕গͳ͍ ɹಈ࡞͕଎͍ ࣗ෼ͷ଎౓Λ্͛Δ ܾஅΛ଎͘ ࢥߟΛ଎͘ ϕϯνλΠϜͷ༗ ޮ׆༻

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ྑ͍ಓ۩Λ࢖͏ w ྑ͍ʹ։ൃ଎౓্͕͕Δ

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͜ΘΕʹ͍͘ಓ۩

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͜ΘΕʹ͍͘ಓ۩ w ٸ͍Ͱɺࡶʹѻͬͯ΋େৎ෉ w ΩʔϘʔυ w ਊͷંΕ΍͍͢γϟʔϖϯΑΓԖච w ΦϓγϣϯΛͭؒҧͬͯ΋յΕͳ͍ίϚϯυ w ϘλϯΛͭԡؒ͠ҧͬͯ΋΋ͱʹ໭ͤΔ

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ؒҧ͑ʹ͍͘ಓ۩

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ؒҧ͑ʹ͍͘ಓ۩ w ૢ࡞Λؒҧ͍ʹ͍͘ w γϣʔτΧοτΩʔΑΓ௚ײతͳϘλϯૢ࡞͕༏Ε͍ͯΔ͜ͱ͕͋Δ w ίʔσΟϯάࣗମΛؒҧ͍ʹ͍͘ w ΤσΟλͷίʔυิ׬ΛͪΌΜͱ࢖͏ w UZQPࢦఠͯ͘͠Εͯઐ໳༻ޠͷࣙॻΛઃఆͰ͖ΔΤσΟλΛ࢖͏

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ख਺͕গͳ͍ಓ۩ ɾͨ͘͞Μ͋Ε͜Εௐ੔͢Δ ɾ్தͰચ͍ˠ୤ਫˠ͗͢͢ˠ୤ਫͱखͰҠಈͤ͞Δ ɾʮελʔτʯϘλϯݸԡͤ͹ચ୕Ͱ͖Δ ɾϘλϯͭͰס૩·ͰͰ͖Δ

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ख਺͕গͳ͍ಓ۩ w ਓ͕ؒ΍Βͳ͍ͱ͍͚ͳ͍͜ͱΛݮΒͯ͠ɺࣗಈԽͰ͖Δ΋ͷΛબͿ w ख਺͕ݮΔͱϛε΋ݮΔ w $* w DTpYFS

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ಈ͖͕଎͍ಓ۩

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ಈ͖͕଎͍ಓ۩ w ྑ͍$*ʢࡳଋͰԥΔʣ w ྑ͍εϖοΫͷ1$ w ΩʔϘʔυ w ແઢΑΓ༗ઢ w Ϛ΢ε w ήʔϛϯάϚ΢ε͸൓Ԡ͕ྑ͍ͷͰΦεεϝ

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ࣗ෼ͷ଎౓Λ্͛Δ

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ܾஅΛ଎͘

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ܾஅΛ଎͘ w ೰ΜͩΓௐࠪͨ͠Γ͢ΔʢίʔσΟϯάҎ֎ͷʣ࣌ؒͷݶ౓ΛܾΊΔ w (PPHMF͸෼ؒϧʔϧʢ˞ཁग़యʣ w ࢲ͸࣌ؒϧʔϧ w ࢮͳͳ͍΋ͷͳΒ·ͣ΍ͬͯΈΔ w ҊͣΔΑΓ࢈Ή͕қ͠

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ࢥߟΛ଎͘

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ࢥߟΛ଎͘ w τϨʔχϯά͢ΔɻखͬऔΓૣ͍ͷ͸଎ௌ w ߴՁͳػث͸͍Βͳ͍ɺΧηοτςʔϓ࠶ੜػ΍ZPVUVCFͷഒ଎࠶ੜͱ͔Ͱे෼ޮՌ͕͋Δ w ΍Γ͗͢Δͱ࿩͠ݴ༿΋ૣޱʹͳͬͪΌ͏ͷͰਓؒؔ܎ʹ஫ҙʜ

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ϕϯνλΠϜͷ༗ޮ׆༻ ͋ͱ෼

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ϕϯνλΠϜͷ༗ޮ׆༻ w ςετ࣮ߦதɺ$*࣮ߦதɺϨϏϡʔ଴ͪ w λεΫʢҎ্ʣฒྻͤΑ w ·ͬͨ͘ผͷϓϩδΣΫτΛฒྻ͢Δͷ͕ཧ૝ w ϓϩδΣΫτ͕͔ͭ͠ͳ͍৔߹͸HJUͷϒϥϯνΛ࢖ͬͯλεΫ͝ͱʹ׬શʹ෼͚Δ w ࣍ʹԿΛ͢Δ͔͸ίϛοτϩάʹ֮͑ͤ͞Δʢ೴಺ʹ֮͑Δ͜ͱ͸Ͱ͖Δ͚ͩগͳ͘ʣ w ϓϧϦΫ΋෼ׂ౷࣏͓ͯ͘͠ w ޙ޻ఔ͕͋Δ΋ͷΛઌʹ࡞ۀ "࣮૷ #࣮૷ ௚ ͠ ςετ ςετ $* ϨϏϡʔ ςετ ϨϏϡʔ $* ϨϏϡʔ ࢓༷֬ೝ ϨϏϡʔ 9͞Μ࡞ۀ ࢓༷֬ೝ

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·ͱΊ w ઓུɿ෼ׂ౷࣏๏ʹΘ͔Βͳ͞Λ࡟Γͳ͕Β࣮૷͢Δ w දΛΠϝʔδͯ͠ཪ͔Β࡞Δ w ૪͍ͷͳ͍΋ͷ͔Β࡞Δ w ྑ͍ಓ۩Λ࢖͏ w ࣗ෼ࣗ਎ͷ଎౓Λ্͛Δ