それ NArray でできるよ

Transcript

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

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2. !UNBFEB
   

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3. !UNBFEB
   w3VCZྺ͸΋͏೥ʹͳΓ·͢ɻ
   

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

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

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6. !UNBFEB
   wͦͷੲຊΛॻ͍ͨΓ΋͠·ͨ͠ɻ
   

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7. !UNBFEB
   wաڈճ΄Ͳࡳຈ3VCZձٞͰ3BJMTͷ͓࿩Λ͞
   ͤͯ௖͖·ͨ͠ɻ
   

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8. !UNBFEB
   w ג
   ͑ʹ͠ςοΫͰͲͬ΀Γ3VCZͰ࢓ࣄ͕Ͱ͖
   ͯ޾ͤͰ͢ɻ
   

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

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10. /"SSBZʁ
    
    ॳࣖ
    
    ໊લ͙Β͍͸ฉ͍ͨࣄ͋Δ
    
    ࢖ͬͨ͜ͱ͋Δ
    
    Α͘࢖͏
    

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

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

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13. 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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14. 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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15. ඵ
    ඵ
    ඵ
    

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16. ສ݅Ҏ
    ্ͷܭࢉΛΑ
    ͘ඞཁͱ͢Δ
    ਓʙʁ
    ඵ
    ඵ
    ඵ
    

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17. Ͱ͸ɺͲΜͳ
    ʹখͯ͘͞΋
    ͍͍ͷͰɺද
    ܭࢉΛΑ͘ඞ
    ཁͱ͢Δ
    ਓʙʁ
    

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

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19. ྫ͑͹ɺ͜Μͳද
    

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20. ྫ͑͹ɺ͜Μͳද
    ߦ໨શମͷ߹ܭ͸ʁ
    

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21. &YDFMͩͱʁ
    

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22. 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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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
    

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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
    JOUܕͷ
    ºͷ࣍ݩ
    ഑ྻΛ༻ҙͯ͠
    

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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
    

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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
    

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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
    

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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
    

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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
    

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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
    

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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
    

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

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

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34. Z࣠ํ޲ͷ߹ܭ΋
    ΍ͬͯΈ·͠ΐ͏
    

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35. ྫ͑͹ɺ͜Μͳද
    "ྻશମͷ߹ܭ͸ʁ
    

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36. &YDFMͩͱʁ
    

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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
    

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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
    

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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
    

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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
    

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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
    

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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
    

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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
    

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

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45. ΋ͬͱෳࡶͳྫ΋
    ΍ͬͯΈ·͠ΐ͏
    

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46. ूܭද࡞͍ͬͯͩ͘͞Ҋ݅
    

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47. ूܭද࡞͍ͬͯͩ͘͞Ҋ݅
    Α͋͘Γ·͢ΑͶʁ
    

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48. ୅ͷখܭΛٻΊΔʹ͸ʁ
    

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49. 3VCZඪ४ͷ"SSBZͰߟ͑
    Δͷ͸΋͏ࢭΊ·ͯ͠ʜ
    

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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 ]
    

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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
    

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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
    

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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
    

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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
    

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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
    

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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·͢
    

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57. ͭ·Γɺ͜ͷลશ෦ɺTVN
    ͰٻΊΒΕΔΘ͚Ͱ͢ʂ
    TVN
    
    TVN
    
    TVN
    

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58. ͜Μͳߟ͑ํ΋
    ͋Γ·͢ɻ
    

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59. ͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ
    දͰ͠ΐ͏͔ʁ
    

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60. ͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ
    දͰ͠ΐ͏͔ʁ
    
    ੈ୅ͷ࣠
    

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61. ͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ
    දͰ͠ΐ͏͔ʁ
    
    ੑผͷ࣠
    

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62. ͍ͭ͘ͷ࣠Ͱ෼ྨ͞Εͨ
    දͰ͠ΐ͏͔ʁ
    
    ళͷ࣠
    

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63. ͱ͍͏͜ͱ͸ɺ࣍ݩ
    ͷදͰ࣋ͭํ͕ࣗવ
    ͳͷͰ͸ʁ
    

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64. ͜Μͳײ͡
    
    
    
    "ళ
    
    #ళ
    
    $ళ
    
    உ
    
    ঁ
    
    ୅
    
    ୅
    
    
    
    
    
    ººͷදʢۭؒ
    
    

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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
    

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66. 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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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
    

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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
    

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

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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 ] ]
    

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

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72. ࢀߟ
    wϚχϡΞϧ
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    wOVNQZؔ܎ͷࢿྉ
    

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73. ͥͻޚࣾͷϏδωε
    ΁͝׆༻͍ͩ͘͞ɻ
    

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