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Tama.rb 2018/10/27(土)発表

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1. ϝλจࣈΛ͸͡Ί͔Βஸೡʹ
   ͚Μ(@alyoalyoalyo)
   2018೥10݄27೔(౔)
   Tama.rb νΣϦʔຊྠಡձ
   

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2. ਖ਼نදݱɺ֮͑ͯ·͔͢ʁ
   ͋Δ೔ͷձ࿩
   

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3. Θ͔ͬͯεοΩϦ͔Βͷ๨ΕͯαούϦ
   

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4. ໨ඪͱ͢Δͱ͜Ζ
   • ਖ਼نදݱɺάάΔճ਺ΛݮΒ͍ͨ͠
   • ɹຖճ͍͔ͪΒάάΔͷ͸େม
   • ɹ͔ͱ͍ͬͯશ෦͸͙֮͑͢ΒΕͳ͍
   • ɹ࠷௿ݶ֮͑Δͱ͜Ζ͚͍֮ͩ͑ͨ
   

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5. ࠷௿ݶʝ
   [\040\t]*(?:\([^\\\x80-\xff\n\015()]*(?:(?:\\[^\x80-\xff]|\([^\\\x
   80-\xff\n\015()]*(?:\\[^\x80-\xff][^\\\x80-\xff\n\015()]*)*\))[^\\
   \x80-\xff\n\015()]*)*\)[\040\t]*)*(?:(?:[^(\040)<>@,;:".\\\[\]\000
   -\037\x80-\xff]+(?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff])|"[^\
   \\x80-\xff\n\015"]*(?:\\[^\x80-\xff][^\\\x80-\xff\n\015"]*)*")[\04
   0\t]*(?:\([^\\\x80-\xff\n\015()]*(?:(?:\\[^\x80-\xff]|\([^\\\x80-\
   xff\n\015()]*(?:\\[^\x80-\xff][^\\\x80-\xff\n\015()]*)*\))[^\\\x80
   -\xff\n\015()]*)*\)[\040\t]*)*(?:\.[\040\t]*(?:\([^\\\x80-\xff\n\0
   15()]*(?:(?:\\[^\x80-\xff]|\([^\\\x80-\xff\n\015()]*(?:\\[^\x80-\x
   ff][^\\\x80-\xff\n\015()]*)*\))[^\\\x80-\xff\n\015()]*)*\)[\040\t]
   *)*(?:[^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff]+(?![^(\040)<>@,;:"
   .\\\[\]\000-\037\x80-\xff])|"[^\\\x80-\xff\n\015"]*(?:\\[^\x80-\xf
   f][^\\\x80-\xff\n\015"]*)*")[\040\t]*(?:\([^\\\x80-\xff\n\015()]*(
   ?:(?:\\[^\x80-\xff]|\([^\\\x80-\xff\n\015()]*(?:\\[^\x80-\xff][^\\
   \x80-\xff\n\015()]*)*\))[^\\\x80-\xff\n\015()]*)*\)[\040\t]*)*)*@[
   \040\t]*(?:\([^\\\x80-\xff\n\015()]*(?:(?:\\[^\x80-\xff]|\([^\\\x8
   0-\xff\n\015()]*(?:\\[^\x80-\xff][^\\\x80-\xff\n\015()]*)*\))[^\\\
   x80-\xff\n\015()]*)*\)[\040\t]*)*(?:[^(\040)<>@,;:".\\\[\]\000-\03
   7\x80-\xff]+(?![^(\040)<>@,;:".\\\[\]\000-\037\x80-\xff])|\[(?:[^\
   \\x80-\xff\n\015\[\]]|\\[^\x80-\xff])*\])[\040\t]*(?:\([^\\\x80-\x
   

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6. ͦ͏΍ɺϝλจࣈ΍
   

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7. ϝλจࣈͬͯʁ
   • ͦͷจࣈຊདྷͷҙຯͰ͸ͳ͘ɺϓϩάϥϜͰಛผͳҙ
   ຯΛ࣋ͨͤͨจࣈͷ͜ͱ
   • (ྫɿʮ+ʯͱϝλจࣈʮ+ʯ͸ผͷҙຯΛ࣋ͭ)
   • ௚༁͢Δͱ௒จࣈɹ
   • ਖ਼نදݱΛࢧ͑Δɺॏཁͳٕज़
   • ͦΜͳʹݸ਺ଟ͘ͳ͍(͚Ͳ͙͢๨ΕΔ)
   • ͱ͍͏͔͜Εԡ͑͞ͳ͍ͱ࿩͕࢝·Βͳ͍
   

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8. ͱ͍͏͜ͱͰ
   ࠷௿ݶ͓͖͍֮͑ͯͨ
   ϝλจࣈΛ͝঺հ
   

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9. ͰΜʂʂ
   

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10. ·ͣࠓճ֮͑Δ΂͖΋ͷΛશͯோΊΔ
    /P ϝλจࣈ
    ?

    
    
    
    
    
    \^
    c
    
    
    <>
    a
    

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11. ଟ͘Ͷ
    ( ^ω^;)
    

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12. ͋ͱ͜ͷه߸ͳΜͯಡΉΜͩΑ
    ^ ←͜Εͱ͔
    []{}()
    ͜Εͱ͔͘͢͝ฆΒΘ͍͠
    

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13. ͷͰ
    

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14. άϧʔϐϯάԽͯ͠
    ݸผʹղઆͯ͠Έͨ
    

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15. 3ͭͷάϧʔϓ
    

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16. ࡾͭͷάϧʔϓ
    • (1)1จࣈϚον
    • (2)܁Γฦ͠
    • (3)άϧʔϐϯά͢Δ΋ͷ
    ɹɹɹɹɹɹɹɹɹɹɹɹͷࡾͭͰ͝঺հ͠·͢
    

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17. (1) 1จࣈϚον
    

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18. ҰͭͷจࣈྻΛѻ͏
    ϝλจࣈ ػೳ
    ?
    ߦͷઌ಄ͷҐஔʹ
    Ϛον
    
    ߦͷ຤ඌͷҐஔʹ
    Ϛον
    ௚લͷจࣈʹϚον
    

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19. ߦ಄Ϛον
    ߲໨ આ໌
    ه߸ ?
    ಡΈํ ΩϟϨοτɺϋοτ
    ػೳ
    ߦͷઌ಄ͷҐஔʹ
    Ϛον
    ༻ྫ
    IUUQSVCVMBSDPNS
    4-"MK[RS#
    

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20. ߦ಄Ϛον
    • จষͷઌ಄ͷҐஔʹϚον
    • ٯʹݴ͑͹ઌ಄ʹͳ͍ͱϚον͠ͳ͍
    

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21. ߦ຤Ϛον
    ߲໨ આ໌
    ه߸
    ಡΈํ υϧɾυϧϚʔΫ
    ػೳ
    ߦͷ຤ඌͷҐஔʹ
    Ϛον
    ༻ྫ
    IUUQSVCVMBSDPNS
    J%*FS.
    

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22. ߦ຤Ϛον
    • ߦͷ຤ඌͷҐஔʹϚον
    • ٯʹݴ͑͹຤ඌʹͳ͍ͱϚον͠ͳ͍
    • ͭ·Γ͖ͬ͞ͷٯ
    

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23. ͳΜͰ΋Ϛον
    ߲໨ આ໌
    ه߸ ɾ
    ಡΈํ ϐϦΦυɺυοτ
    ػೳ ௚લͷจࣈʹϚον
    ༻ྫ
    IUUQSVCVMBSDPNS
    Z1F3KXOZ(
    

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24. ͳΜͰ΋Ϛον
    • ೚ҙͷ1จࣈʹϚονͤ͞Δ͜ͱ͕Ͱ͖Δ
    • ϙʔΧʔ΍େ෋߽ʹ͓͚ΔδϣʔΧʔʹ͍ۙ
    

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25. (2)܁Γฦ͠
    

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26. ܁Γฦ͠
    ϝλจࣈ Ϛον͢Δέʔε
    
    ௚લͷจࣈ΍ύλʔϯ͕
    ճҎ্࿈ଓ͢Δ
    
    ௚લͷจࣈ΍ύλʔϯ͕
    ճҎ্࿈ଓ͢Δ
    ௚લͷจࣈ΍ύλʔϯ͕
    ճ΋͘͠͸ճҎ্࿈ଓ͢Δ
    \O^
    ௚લͷจࣈ΍ύλʔϯ͕
    OճҎ্࿈ଓ͢Δ
    

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27. ܁Γฦͬͯ͠ʁ
    • ܁Γฦ͠ͷ਺ྔΛࢦఆ͠ɺ֘౰͢Δ΋ͷͱϚονϯά
    • ʮྔࢦఆࢠʯͱ΋ݺ͹ΕΔ
    • ӳޠͰ͍͏ͱgeneral repetition quantifier(൚༻ͷ ܁Γ
    ฦ͠ͷ਺ྔΛද͢Ҽࢠ)
    

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28. *
    ߲໨ આ໌
    ه߸
    ಡΈํ ΞελϦεΫ
    ػೳ ௚લͷจࣈ΍ύλʔϯ͕ճҎ্
    ࿈ଓ͢Δ΋ͷʹϚον
    ༻ྫ
    IUUQSVCVMBSDPNS
    OI94/-GV.
    

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29. *
    • 0ճҎ্Ϛονͬͯʁ
    • ௚લͷҰจࣈ͸লུՄೳɺͱ͍͏ҙຯ
    • ਤத͸ͦΕͧΕ0ճɾ1ճɾ2ճɾ3ճϚον
    

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30. ?
    ߲໨ આ໌
    ه߸
    ಡΈํ ΫΤενϣϯϚʔΫ
    ػೳ ௚લͷจࣈ΍ύλʔϯ͕ճ

    ·ͨ͸ճ࿈ଓ͢Δ΋ͷʹϚον
    ༻ྫ
    IUUQSVCVMBSDPNS
    %G"WW+[
    

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31. ?
    • 0ճ·ͨ͸1ճ
    • 2ճҎ্࿈ଓ͢Δ΋ͷʹ͸Ϛον͍ͯ͠ͳ͍
    

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32. +
    ߲໨ આ໌
    ه߸
    ಡΈํ ϓϥε
    ػೳ ௚લͷจࣈ΍ύλʔϯ͕ճҎ্
    ࿈ଓ͢Δ΋ͷʹϚον
    ༻ྫ
    IUUQSVCVMBSDPNS
    S--(7L7
    

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33. +
    • 1ճҎ্ͳͷͰ௚લจࣈ͸লུͰ͖ͳ͍
    • *ͱ?ͱͷҧ͍Λҙࣝ͢΂͠
    

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34. ؓ࿩ٳ୊
    +ͱ͔*ͱ͔ʁͱ͔ɺ৭ʑ͋Δͷ͸Θ͔ͬͨΜͰ͚͢Ͳ
    ػೳ͕ࣅ͍֮ͯͯ͑ʹ͍͘ΜͰ͕͢ʝ
    

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35. ؓ࿩ٳ୊
    ( ʈωʈ) ͜͜ʹJIS഑ྻͷ
    ɹɹɹΩʔϘʔυ͕
    ɹɹɹ͋Δ͡ΌΖʁ
    

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36. ؓ࿩ٳ୊
    ( ʈωʈ) ࣮͸͜͏͡Ό
    

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38. {n}
    ߲໨ આ໌
    ه߸ \O^
    ಡΈํ
    ϒϨʔε

    ೾ׅހɺதׅހ
    ػೳ ௚લͷจࣈ΍άϧʔϓͷ

    OճҎ্ͷ܁Γฦ͠ʹϚον
    ༻ྫ
    IUUQSVCVMBSDPNS
    U[U,L+C
    

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39. {n}
    • {}಺ʹࢦఆͨ͠਺ͷจࣈʹϚον͢Δ
    • a{2}ͳΒa͕2ճ࿈ଓ͍ͯ͠Δ΋ͷʹϚον
    

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40. {n}ͷछྨ
    ճ਺ͷߜΓࠐΈ͕Ͱ͖ΔͷͰɺޮ཰త͔ͭ҆৺ײ͕͋Δ
    ߲໨ \O^ \O ^ \ O^ \O N^
    ػೳ

    ௚લͷจࣈΛ
    Oճ OճҎ্ OճҎԼ
    OճҎ্NճҎ
    Լ
    

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41. ·ͱΊ
    ճ਺ ه߸ ҙຯ
    
    ճҎ্ͷ܁Γฦ͠ʹ
    Ϛον
    d
    ճҎ্ͷ܁Γฦ͠ʹ
    Ϛον
    PS
    ճ·ͨ͸ճͷ܁Γ
    ฦ͠ʹϚον
    ࢦఆճ਺ \O^
    Oճͷ܁Γฦ͠ʹ
    Ϛον
    ࢦఆճ਺Ҏ্ \O ^
    OճҎ্ͷ܁Γฦ͠ʹ
    Ϛον
    ࢦఆճ਺Ҏ্ɺࢦఆճ
    ਺ҎԼ
    \O N^
    OճҎ্NճҎԼͷ
    ܁Γฦ͠ʹϚον
    

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42. (3)ෳ਺จࣈΛѻ͏΋ͷ
    

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43. ෳ਺ͷจࣈྻΛѻ͏
    ϝλจࣈ ػೳ
    c
    cͰ۠੾ΒΕͨ

    ͍ͣΕ͔ͷจࣈྻʹϚον
    
    ਖ਼نදݱͷάϧʔϓԽ
    <> จࣈΫϥεͷ࡞੒
    a
    
    จࣈΫϥεͷলུه๏

    
    όοΫεϥογϡه๏
    

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44. |
    ߲໨ આ໌
    ه߸ c
    ಡΈํ όʔςΟΧϧόʔ
    ػೳ
    cͰ۠੾ΒΕͨจࣈྻͷ͍ͣΕ͔ͷ
    จࣈྻʹϚον
    ༻ྫ
    IUUQSVCVMBSDPNS
    WB/F'NH
    

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45. |
    • |Ͱ۠੾ΒΕͨจࣈΛϚονͰ͖Δ
    • orͱಡΈସ͑ͯ΋͍͍
    • A | B ͳΒAͱBʹϚον
    

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46. [ ]
    ߲໨ આ໌
    ه߸ <>
    ಡΈํ େ͔ͬ͜ɺϒϥέοτ
    ػೳ Χοί಺ͷ͍ͣΕ͔ͷจࣈ
    ༻ྫ IUUQSVCVMBSDPNSJDR2[UQJ"
    

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47. [ ]
    • []಺ͷจࣈ͸ɺҰͭͷ·ͱ·ͬͨจࣈྻͰ͸ͳ͘ݸʑͷจࣈͱͯ͠ѻΘΕΔ
    • ͳͷͰԼهͷྫͩͱʮஉʯʮੑʯʮ͞ʯʮΜʯ͕ݸผʹϚον͢Δ
    

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48. [ ]೿ੜɿ^Λ͚ͭΔͱ൱ఆͷҙຯ
    ߲໨ આ໌
    ه߸ >
    ಡΈํ ൱ఆ෇͖େ͔ͬ͜ɺϒϥέοτ
    ػೳ
    Χοί಺ͷ͍ͣΕ͔ͷ

    จࣈҎ֎ͷ΋ͷ
    ༻ྫ
    IUUQSVCVMBSDPNS
    J',4(3QBJO
    

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49. []ͷলུه๏
    • []಺ͷจࣈҎ֎ͷ΋ͷ͕Ϛον͢Δ
    • ͳͷͰԼهͷྫͩͱʮஉʯʮੑʯʮ͞ʯʮΜʯҎ֎ͷ΋ͷ͕Ϛον͢Δ
    

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50. ( )
    ߲໨ આ໌
    ه߸
    
    ಡΈํ ؙ͔ͬ͜ɺύʔϨϯ
    ػೳ άϧʔϓΛ࡞Δ
    ༻ྫ ߲࣍
    

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51. ( )
    • []ͱҧ͍άϧʔϓͱͯ͠ѻ͏ͷͰॱং͕อͨΕΔ
    • ্هͷಛੑ͔Β | ͱ૬ੑ͕ྑ͍
    

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52. \
    ߲໨ આ໌
    ه߸ a
    ಡΈํ όοΫεϥογϡ
    ػೳ
    ɾϝλจࣈΛΤεέʔϓ͢Δ
    ɾaಛఆͷӳࣈͰจࣈͷলུه๏Λ࡞Δ
    ༻ྫ IUUQSVCVMBSDPNSJDR2[UQJ"
    

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53. Τεέʔϓͬͯʁ
    • ਖ਼نදݱதͩͱɺ͋Δछͷه߸͸ϝλจࣈͱͯ͠ೝࣝ͞Εͯ͠·͏
    • ϝλจࣈͱͯ͠ͷҙຯΛଧͪফ͢͜ͱΛΤεέʔϓͱ͍͏
    

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54. จࣈͷলུه๏
    লུه๏ આ໌ লུݩ උߟ
    aX ӳ਺ࣈ XPSE
    a8 ඇӳ਺ࣈ 803%
    aT ۭനจࣈ TQBDF
    a4 ඇۭനจࣈ 41"$&
    aE ਐ਺ࣈ <> EJHJU
    a% ඇਐ਺ࣈ > %*(*5
    aI ਐ਺ࣈ <BG"'>
    IFYBEFDJNBM
    OVNCFS
    a) ඇਐ਺ࣈ BG"'>
    )&9"%&$*."-
    /6.#&3
    Մಡੑ͕͕͋ΔͷͰͥͻ࢖͍͖ͬͯ·͠ΐ͏
    

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55. লུه๏ɺ৭ʑ͋Δ͚Ͳ4छྨ
    • େจࣈͩͱʮҎ֎ʯʹͳΔΑ
    • ӳ਺ࣈ͔ ۭനจࣈ͔(w ͱ s)
    • 10ਐ਺͔ 16ਐ਺͔(d ͱ h )
    

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56. ࠶ܝ
    ࠷ॳʹோΊͨ࣌ͱൺ΂ΔͱɺͪΐͬͱΘ͔ΔΑ͏ʹͳͬͯ·ͤΜ͔ʁ
    /P ϝλจࣈ
    ?

    
    
    
    
    
    \^
    c
    
    
    <>
    a
    

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57. ͔֮ͤͬ͑ͨ͘Μ͔ͩΒ

    ͳΜ͔Ϳͬ͜͵͍ͯΈ͍ͨ
    

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58. grep
    • grepͯ͠ΈΔ
    • StringΫϥε͕࣋ͬͯΔΠϯελϯεϝιουͱ͔
    

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59. match
    • ࠓ࡞ۀ͠ͳ͕Βௌ͍ͯΔYoutubeͷύϥϝʔλͱ͔
    

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60. gsub
    • ൵͍͠աڈΛٹࡁͯ͋͛͠Δͱ͔ʝ
    

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61. ਖ਼نදݱɺศརͰ͢Ͷʂ
    ৭ʑ࢖͍͖ͬͯ·͠ΐ͏ʂʂ
    

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