それ NArray でできるよ

Transcript

1. 1.

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

2. 2.

   !UNBFEB

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   !UNBFEB w3VCZྺ͸΋͏೥ʹͳΓ·͢ɻ

4. 4.

   !UNBFEB w3VCZྺ͸΋͏೥ʹͳΓ·͢ɻ (C)Ωϟϓςϯཌྷ

5. 5.

   !UNBFEB w3VCZྺ͸΋͏೥ʹͳΓ·͢ɻ (C)Ωϟϓςϯཌྷ

6. 6.

   !UNBFEB wͦͷੲຊΛॻ͍ͨΓ΋͠·ͨ͠ɻ

7. 7.

   !UNBFEB wաڈճ΄Ͳࡳຈ3VCZձٞͰ3BJMTͷ͓࿩Λ͞ ͤͯ௖͖·ͨ͠ɻ

8. 8.

   !UNBFEB w ג ͑ʹ͠ςοΫͰͲͬ΀Γ3VCZͰ࢓ࣄ͕Ͱ͖ ͯ޾ͤͰ͢ɻ

9. 9.

   ࠓ೔͸ޚࣾͷϏδωε Ͱ͝׆༻͍͚ͨͩΔ /"SSBZ ͷ͝ఏҊͰ͢ɻ

10. 10.

    /"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
    $PSF
    J
    ()[

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

14. 14.

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

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    ඵ ඵ ඵ

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    ສ݅Ҏ ্ͷܭࢉΛΑ ͘ඞཁͱ͢Δ ਓʙʁ ඵ ඵ ඵ

17. 17.

    Ͱ͸ɺͲΜͳ ʹখͯ͘͞΋ ͍͍ͷͰɺද ܭࢉΛΑ͘ඞ ཁͱ͢Δ ਓʙʁ

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

19. 19.

    ྫ͑͹ɺ͜Μͳද

20. 20.

    ྫ͑͹ɺ͜Μͳද ߦ໨શମͷ߹ܭ͸ʁ

21. 21.

    &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
23. 23.

    /"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
24. 24.

    /"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 JOU
    ܕͷ 
    º
    
    ͷ
    ࣍ݩ ഑ྻΛ༻ҙͯ͠
25. 25.

    /"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
26. 26.

    /"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
27. 27.

    /"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
28. 28.

    /"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
29. 29.

    ·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
30. 30.

    /"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
31. 31.

    /"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
32. 32.

    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
34. 34.

    Z࣠ํ޲ͷ߹ܭ΋ ΍ͬͯΈ·͠ΐ͏

35. 35.

    ྫ͑͹ɺ͜Μͳද "ྻશମͷ߹ܭ͸ʁ

36. 36.

    &YDFMͩͱʁ

37. 37.

    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
38. 38.

    /"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
39. 39.

    /"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
40. 40.

    /"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
41. 41.

    ·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
42. 42.

    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
43. 43.

    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
44. 44.

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

45. 45.

    ΋ͬͱෳࡶͳྫ΋ ΍ͬͯΈ·͠ΐ͏

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    ूܭද࡞͍ͬͯͩ͘͞Ҋ݅
    

47. 47.

    ूܭද࡞͍ͬͯͩ͘͞Ҋ݅
    Α͋͘Γ·͢ΑͶʁ

48. 48.

    ୅ͷখܭΛٻΊΔʹ͸ʁ

49. 49.

    3VCZඪ४ͷ"SSBZͰߟ͑ Δͷ͸΋͏ࢭΊ·ͯ͠ʜ

50. 50.

    /"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 ]
51. 51.

    /"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 ] Y࣠͸શ෦ɺ Z࣠͸൪໨ͱ൪໨ Λऔಘ Y Z
52. 52.

    /"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 ] ͦΕΛZ࣠ํ޲ʹ ߹ܭ
53. 53.

    ͪ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
54. 54.

    ͪ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 TVN  ͩͱɺ Y࣠ํ޲ʹ߹ܭ͞Εͯ
55. 55.

    ͪ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 TVN  ͩͱɺ Z࣠ํ޲ʹ߹ܭ͞Εͯ
56. 56.

    ͪ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 TVNͩͱɺ શํ޲ʹ ߹ܭ͞Ε·͢
57. 57.

    ͭ·Γɺ͜ͷลશ෦ɺTVN ͰٻΊΒΕΔΘ͚Ͱ͢ʂ TVN  TVN  TVN

58. 58.

    ͜Μͳߟ͑ํ΋ ͋Γ·͢ɻ

59. 59.

    ͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ දͰ͠ΐ͏͔ʁ

60. 60.

    ͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ දͰ͠ΐ͏͔ʁ  ੈ୅ͷ࣠

61. 61.

    ͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ දͰ͠ΐ͏͔ʁ  ੑผͷ࣠

62. 62.

    ͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ දͰ͠ΐ͏͔ʁ  ళͷ࣠

63. 63.

    ͱ͍͏͜ͱ͸ɺ࣍ݩ ͷදͰ࣋ͭํ͕ࣗવ ͳͷͰ͸ʁ

64. 64.

    ͜Μͳײ͡    "ళ  #ళ  $ళ 

    உ  ঁ  ୅  ୅      ººͷදʢۭؒ
65. 65.

    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
66. 66.

    na[0, 0, 0] => 1 na[0, 1, 0] => 4

    na[0, 0, 1] => 7 ஋Λऔಘͯ͠Έ·͠ΐ͏ "ళ உ ୅ "ళ ঁ ୅ "ళ உ ୅
67. 67.

    ୅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
68. 68.

    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
69. 69.

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

70. 70.

    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 ] ]
71. 71.

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

72. 72.

    ࢀߟ wϚχϡΞϧ IUUQOBSSBZSVCZGPSHFPSHJOEFYIUNMKB w3VCZٯҾ͖Ϩγϐ Ϩγϐ
     wOVNQZؔ܎ͷࢿྉ

73. 73.

    ͥͻޚࣾͷϏδωε ΁͝׆༻͍ͩ͘͞ɻ