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1จࣈͷੈք @orisano
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Έͳ͞Μ จࣈΛ͑ΒΕ·͢ΑͶʁ
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a
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a => 1
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͋
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͋ => 1
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佛
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佛 => 1
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No content
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=> 1
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=> 1
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Z͑ͫ̓ͪ̂ͫ̽ ̴̙̤̞͉͚̯̞̠͍A̴̵̜̰͔ ͫ͗ ͢ L̠ͨͧͩ͘ G̴̻͈͍͔̹ ̑͗̎̅͛ ́ Ǫ̵̹̻̝̳ ͂̌ ̌͘! ͖̬̰̙̗ ̿̋ ͥ ͥ̂ͣ̐́́͜͞
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Z͑ͫ̓ͪ̂ͫ̽ ̴̙̤̞͉͚̯̞̠͍A̴̵̜̰͔ ͫ͗ ͢ L̠ͨͧͩ͘ G̴̻͈͍͔̹ ̑͗̎̅͛ ́ Ǫ̵̹̻̝̳ ͂̌ ̌͘! ͖̬̰̙̗ ̿̋ ͥ ͥ̂ͣ̐́́͜͞ => 6
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Έͳ͞Μ όΠτΛ͑ΒΕ·͔͢ʁ (UTF-8)
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a
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a => 1
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͋
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͋ => 3
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佛
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佛 => 4
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=> 4
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=> 18
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Z͑ͫ̓ͪ̂ͫ̽ ̴̙̤̞͉͚̯̞̠͍A̴̵̜̰͔ ͫ͗ ͢ L̠ͨͧͩ͘ G̴̻͈͍͔̹ ̑͗̎̅͛ ́ Ǫ̵̹̻̝̳ ͂̌ ̌͘! ͖̬̰̙̗ ̿̋ ͥ ͥ̂ͣ̐́́͜͞
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Z͑ͫ̓ͪ̂ͫ̽ ̴̙̤̞͉͚̯̞̠͍A̴̵̜̰͔ ͫ͗ ͢ L̠ͨͧͩ͘ G̴̻͈͍͔̹ ̑͗̎̅͛ ́ Ǫ̵̹̻̝̳ ͂̌ ̌͘! ͖̬̰̙̗ ̿̋ ͥ ͥ̂ͣ̐́́͜͞ => 143
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͋ͳ͕ͨࢥ͏1จࣈ Ͳ͏͑Δ͖͔ʁ
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byteͰ͑ΒΕͳ͍
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Unicodeจࣈू߹ จࣈͱ͕ରԠ͢Δ
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͋ => 3042
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=> 1F914
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͜ͷͷ͜ͱΛ ίʔυϙΠϯτ ͱݺͿ
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͜ͷίʔυϙΠϯτΛ byteྻͰදݱ͢Δํ๏Λ ΤϯίʔσΟϯάͱ͍͏
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UTF-8ͱ͔UTF-16ͱ͔ ΤϯίʔσΟϯάͷҰछ
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ͱΓ͋͑ͣ ίʔυϙΠϯτΛ͑Ε ղܾʁ
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͍͍͑
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=> 1F468 + 200D + 1F469 + 200D + 1F466
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࣮ෳͷίʔυϙΠϯτͰ ҰͭͷจࣈʹͳͬͨΓ͢Δ
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ਓ͕ؒೝ͍ࣝͯ͠Δ̍จࣈ ॻهૉ(Grapheme cluster) ͱݺΕ͍ͯΔ
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Ͳ͏Ε ίʔυϙΠϯτͷྻ͔Β ॻهૉΛऔΓग़ͤΔ͔
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ίʔυϙΠϯτ͕ؒ ॻهૉڥքʹͳΔ͔Ͳ͏͔ͷ ݫີͳϧʔϧ͕͋Δ
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UAX #29 Unicode Text Segmentation
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No content
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͜ΕΛJSͰ࣮ͯ͠·ͨ͠ github.com/orisano/graphemesplit
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ৄ͘͠ UAX #29 Λݟͯ http://unicode.org/reports/tr29/
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ݟΒ͵ਓʹʓจࣈͱ ݴΘΕͨͱ͖ʹ ͪΌΜͱ֬ೝ͠Α͏ʂ
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1 byte? 1 codepoint? 1 grapheme cluster?