それ NArray でできるよ

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ͦΕ/"SSBZͰ Ͱ͖ΔΑ 札幌中央区RRuubbyy会議0011 22001144年22月88日 @@ttmmaaeeddaa

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!UNBFEB

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!UNBFEB w3VCZྺ͸΋͏೥ʹͳΓ·͢ɻ

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!UNBFEB w3VCZྺ͸΋͏೥ʹͳΓ·͢ɻ (C)Ωϟϓςϯཌྷ

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!UNBFEB w3VCZྺ͸΋͏೥ʹͳΓ·͢ɻ (C)Ωϟϓςϯཌྷ

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!UNBFEB wͦͷੲຊΛॻ͍ͨΓ΋͠·ͨ͠ɻ

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!UNBFEB wաڈճ΄Ͳࡳຈ3VCZձٞͰ3BJMTͷ͓࿩Λ͞ ͤͯ௖͖·ͨ͠ɻ

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!UNBFEB w ג ͑ʹ͠ςοΫͰͲͬ΀Γ3VCZͰ࢓ࣄ͕Ͱ͖ ͯ޾ͤͰ͢ɻ

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ࠓ೔͸ޚࣾͷϏδωε Ͱ͝׆༻͍͚ͨͩΔ /"SSBZ ͷ͝ఏҊͰ͢ɻ

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/"SSBZʁ ॳࣖ ໊લ͙Β͍͸ฉ͍ͨࣄ͋Δ ࢖ͬͨ͜ͱ͋Δ Α͘࢖͏

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/"SSBZ wాதণ޺͞Μ࡞ͷ3VCZ༻ଟ࣍ݩ਺஋഑ྻܭࢉ ϥΠϒϥϦɻ wओʹେྔͷ਺஋ܭࢉΛߴ଎ʹॲཧ͢Δ͜ͱΛ໨ తʹ࡞ΒΕͨ΋ͷɻ http://magazine.rubyist.net/?0006-RLR

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ͲΕ͙Β͍଎͍͔ʁ ഑ྻཁૉ਺ ඵ਺ ഑ྻʹ͔Β·Ͱͷཚ਺Λ֨ೲ͠ɺͦͷ߹ܭɺฏۉɺ෼ࢄɺ࠷େ஋ɺ࠷খ஋ΛٻΊΔͷʹ͔͔ͬͨ߹ܭඵ਺ 3VCZ /"SSBZ .BD#PPL"JS*OUFM$PSFJ()[

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ͲΕ͙Β͍଎͍͔ʁ ഑ྻཁૉ਺ ඵ਺ ഑ྻʹ͔Β·Ͱͷཚ਺Λ֨ೲ͠ɺͦͷ߹ܭɺฏۉɺ෼ࢄɺ࠷େ஋ɺ࠷খ஋ΛٻΊΔͷʹ͔͔ͬͨ߹ܭඵ਺ 3VCZ /"SSBZ .BD#PPL"JS*OUFM$PSFJ()[ ໿ഒ ߴ଎

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ͲΕ͙Β͍଎͍͔ʁ ഑ྻཁૉ਺ ඵ਺ ഑ྻʹ͔Β·Ͱͷཚ਺Λ֨ೲ͠ɺͦͷ߹ܭɺฏۉɺ෼ࢄɺ࠷େ஋ɺ࠷খ஋ΛٻΊΔͷʹ͔͔ͬͨ߹ܭඵ਺ 3VCZ /"SSBZ .BD#PPL"JS*OUFM$PSFJ()[ ໿ഒ ߴ଎ Ͱɾ͢ɾ͕ʜ

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ඵ ඵ ඵ

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ສ݅Ҏ ্ͷܭࢉΛΑ ͘ඞཁͱ͢Δ ਓʙʁ ඵ ඵ ඵ

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Ͱ͸ɺͲΜͳ ʹখͯ͘͞΋ ͍͍ͷͰɺද ܭࢉΛΑ͘ඞ ཁͱ͢Δ ਓʙʁ

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ͱ͍͏Θ͚Ͱɺࠓ೔͸ /"SSBZͷ଎౓໘ΑΓ ΋ɺදܭࢉػೳʹ ண໨͓ͨ͠࿩Λ͠·͢ɻ

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ྫ͑͹ɺ͜Μͳද

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ྫ͑͹ɺ͜Μͳද ߦ໨શମͷ߹ܭ͸ʁ

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&YDFMͩͱʁ

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3VCZඪ४ͷ"SSBZͩͱʁ a = [[1,2,3], [4,5,6], [7,8,9]] => [[1, 2, 3], [4, 5, 6], [7, 8, 9]] a[1].inject(:+) => 15

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1] => NArray.int(3): [ 4, 5, 6 ] na[true, 1].sum => 15

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1] => NArray.int(3): [ 4, 5, 6 ] na[true, 1].sum => 15 JOUܕͷ ºͷ࣍ݩ ഑ྻΛ༻ҙͯ͠

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1] => NArray.int(3): [ 4, 5, 6 ] na[true, 1].sum => 15 ࢝·ΓͰɺ ͣͭ૿Ճ͢Δ਺Ͱ ຒΊΔ

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1] => NArray.int(3): [ 4, 5, 6 ] na[true, 1].sum => 15 ศ্ٓɺԣ࣠ΛY࣠ɺ ॎ࣠ΛZ࣠ͱݺͼ·͢ Αɻ Y Z

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1] => NArray.int(3): [ 4, 5, 6 ] na[true, 1].sum => 15 Y࣠͸શ෦ɺ Z࣠͸൪໨ɺ Λऔಘ ศ্ٓɺԣ࣠ΛY࣠ɺ ॎ࣠ΛZ࣠ͱݺͼ·͢ Αɻ Y Z

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1] => NArray.int(3): [ 4, 5, 6 ] na[true, 1].sum => 15 ͦΕΛ߹ܭ

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·ͱΊΔͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1].sum => 15

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/"SSBZͷಛ௕ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1].sum => 15 ͪΌΜͱºͷܗ Ͱදࣔͯ͘͠ΕΔ

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/"SSBZͷಛ௕ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, 1].sum => 15 ૢ࡞͸શͯNBQɻ ࣗ෼ͰNBQ ΍JOKFDUͳͲΛॻ ͘ඞཁ͸ͳ͍ɻ

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ൺ΂ͯΈ·͠ΐ͏ x࣠ํ޲΁ͷ߹ܭ Array a[1].inject(:+) NArray na[true, 1].sum

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ൺ΂ͯΈ·͠ΐ͏ x࣠ํ޲΁ͷ߹ܭ Array a[1].inject(:+) NArray na[true, 1].sum /"SSBZͷํ͕௚ײత Ͱ͕͢ɺ "SSBZͰ΋ ·ͩڐͤΔϨϕϧ

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Z࣠ํ޲ͷ߹ܭ΋ ΍ͬͯΈ·͠ΐ͏

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ྫ͑͹ɺ͜Μͳද "ྻશମͷ߹ܭ͸ʁ

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&YDFMͩͱʁ

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3VCZඪ४ͷ"SSBZͩͱʁ a = [[1,2,3], [4,5,6], [7,8,9]] => [[1, 2, 3], [4, 5, 6], [7, 8, 9]] a.map{|row| row[0]}.inject(:+) => 12

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[0, true] => NArray.int(3): [ 1, 4, 7 ] na[0, true].sum => 12

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[0, true] => NArray.int(3): [ 1, 4, 7 ] na[0, true].sum => 12 Y࣠͸൪໨ɺ Z࣠͸શ෦ Λऔಘ Y Z

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/"SSBZͩͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[0, true] => NArray.int(3): [ 1, 4, 7 ] na[0, true].sum => 12 ͦΕΛ߹ܭ

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·ͱΊΔͱʁ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[0, true].sum => 12

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ൺ΂ͯΈ·͠ΐ͏ x࣠ํ޲΁ͷ߹ܭ y࣠ํ޲΁ͷ߹ܭ Array a[1].inject(:+) a.map{|row| row[0]}. inject(:+) NArray na[true, 1].sum na[0, true].sum

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ൺ΂ͯΈ·͠ΐ͏ x࣠ํ޲΁ͷ߹ܭ y࣠ํ޲΁ͷ߹ܭ Array a[1].inject(:+) a.map{|row| row[0]}. inject(:+) NArray na[true, 1].sum na[0, true].sum "SSBZͩͱɺྻͷ߹ܭͷͱ͖ͷίʔυͱશ͘ର শੑ͕ͳ্͍ʹɺগ͠௕ͯ͘Կ΍͍ͬͯΔͷ͔ Θ͔Γʹ͍͘Ͱ͢Ͷ

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͜͜·Ͱͷ·ͱΊ w/"SSBZͰ͸දΛදͱͯ͠ѻ͑·͢ɻ wૢ࡞͸શͯNBQ΍JOKFDUʹ૬౰͢ΔͷͰɺࣗ ෼ͰNBQ΍JOKFDUΛॻ͘ඞཁ͕͋Γ·ͤΜɻ

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΋ͬͱෳࡶͳྫ΋ ΍ͬͯΈ·͠ΐ͏

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ूܭද࡞͍ͬͯͩ͘͞Ҋ݅

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ूܭද࡞͍ͬͯͩ͘͞Ҋ݅ Α͋͘Γ·͢ΑͶʁ

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୅ͷখܭΛٻΊΔʹ͸ʁ

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3VCZඪ४ͷ"SSBZͰߟ͑ Δͷ͸΋͏ࢭΊ·ͯ͠ʜ

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/"SSBZͰ na = NArray.int(3,3).indgen!(1,1) => NArray.int(3,3): [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] na[true, [0,1]] => NArray.int(3,2): [ [ 1, 2, 3 ], [ 4, 5, 6 ] ] na[true, [0,1]].sum(1) => NArray.int(3): [ 5, 7, 9 ]

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ͪͳΈʹ na[true, [0,1]] => NArray.int(3,2): [ [ 1, 2, 3 ], [ 4, 5, 6 ] ] na[true, [0,1]].sum(0) na[true, [0,1]].sum(1) na[true, [0,1]].sum => NArray.int(2): [ 6, 15 ] => NArray.int(3): [ 5, 7, 9 ] => 21

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ͭ·Γɺ͜ͷลશ෦ɺTVN ͰٻΊΒΕΔΘ͚Ͱ͢ʂ TVN TVN TVN

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͜Μͳߟ͑ํ΋ ͋Γ·͢ɻ

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͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ දͰ͠ΐ͏͔ʁ

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͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ දͰ͠ΐ͏͔ʁ ੈ୅ͷ࣠

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͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ දͰ͠ΐ͏͔ʁ ੑผͷ࣠

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͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ දͰ͠ΐ͏͔ʁ ళͷ࣠

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ͱ͍͏͜ͱ͸ɺ࣍ݩ ͷදͰ࣋ͭํ͕ࣗવ ͳͷͰ͸ʁ

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͜Μͳײ͡ "ళ #ళ $ళ உ ঁ ୅ ୅ ººͷදʢۭؒ

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na = NArray.int(3, 2, 2).indgen!(1, 1) => NArray.int(3,2,2): [ [ [ 1, 2, 3 ], [ 4, 5, 6 ] ], [ [ 7, 8, 9 ], [ 10, 11, 12 ] ] ] /"SSBZͰදݱ͢Δͱʁ

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na[0, 0, 0] => 1 na[0, 1, 0] => 4 na[0, 0, 1] => 7 ஋Λऔಘͯ͠Έ·͠ΐ͏ "ళ உ ୅ "ళ ঁ ୅ "ళ உ ୅

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୅ͷ஋શ෦͸ʁ na[true, true, 0] => NArray.int(3,2): [ [ 1, 2, 3 ], [ 4, 5, 6 ] ] na[true, true, 0].sum => 21 ళશ෦ ୅ ੑผશ෦

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உੑͷ஋શ෦͸ʁ na[true, 0, true] => NArray.int(3,2): [ [ 1, 2, 3 ], [ 7, 8, 9 ] ] na[true, 0, true].sum => 30 ళશ෦ ੈ୅શ෦ உੑ

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΋ͬͱศརʹʂ w/"SSBZ͸Կ࣍ݩͷσʔλͰ΋ѻ͑Δ w͍͍ͪͪ஋ͱ഑ྻͷΠϯσοΫεΛ಄Ͱߟ͑ͯ ରԠ͚ͮΔͷ໘౗ͳͷͰɺͦ͜Λਓʹ༏͍͠ײ ͡ͷϥούʔΛඃͤͯ͋͛Δͱɺ೚ҙͷ਺ͷ࣠ ͰσʔλΛ੔ཧͰ͖Δശ͕Ͱ͖͕͋Γ·͢ɻ

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cube = Cube.new([ {key: :mise, values: ["Aళ", "Bళ", "Cళ"]}, {key: :sedai, values: ["10୅","20୅"]}, {key: :sei, values:["உ","ঁ"]} ]) # ళA, 20୅, ঁʹ20Λઃఆ cube.set( { mise: "Aళ", sedai: "20୅", sei: "ঁ" }, 20) # ళA, 20୅, ঁͷ஋Λऔಘ cube.get( { mise: "Aళ", sedai: "20୅", sei: "ঁ" }) => 20 # 10୅ͷ஋Λऔಘ cube.get( { sedai: "10୅"} ) => NArray.int(3,2): [ [ 1, 2, 3 ], [ 7, 8, 9 ] ]

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·ͱΊ w/"SSBZ͸೚ҙͷ਺ͷ࣠ͷσʔλΛࣗ༝ʹѻ͑ ·͢ɻ w/"SSBZ͸ͦͷσʔλۭؒͷதͷ޷͖ͳ৔ॴͷ σʔλʹॊೈʹΞΫηεͰ͖·͢ɻ w&YDFM͙Β͍ΧδϡΞϧʹ/"SSBZΛ࢖͍·͠ ΐ͏ʂ

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ࢀߟ wϚχϡΞϧ IUUQOBSSBZSVCZGPSHFPSHJOEFYIUNMKB w3VCZٯҾ͖Ϩγϐ Ϩγϐ wOVNQZؔ܎ͷࢿྉ

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ͥͻޚࣾͷϏδωε ΁͝׆༻͍ͩ͘͞ɻ