Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
the world of characters
Search
orisano
September 13, 2018
8
1.4k
the world of characters
orisano
September 13, 2018
Tweet
Share
More Decks by orisano
See All by orisano
OSS Performance Tuning Tips
orisano
8
5.9k
Docker-Compose & BuildKit
orisano
4
1k
Container Build Talk
orisano
3
2.5k
dockerignore talk
orisano
2
7.1k
Better docker image+
orisano
6
6.1k
Socket.IO Introduction
orisano
0
3.2k
Profiling Go Application
orisano
11
7.8k
Multi-stage Builds Patterns & Practice
orisano
6
5.2k
better docker image
orisano
22
30k
Featured
See All Featured
Done Done
chrislema
184
16k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
21k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
8
340
Designing for humans not robots
tammielis
253
25k
Typedesign – Prime Four
hannesfritz
42
2.7k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.4k
Fireside Chat
paigeccino
37
3.5k
[RailsConf 2023] Rails as a piece of cake
palkan
55
5.7k
Measuring & Analyzing Core Web Vitals
bluesmoon
7
510
How GitHub (no longer) Works
holman
314
140k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2.2k
A Tale of Four Properties
chriscoyier
160
23k
Transcript
1จࣈͷੈք @orisano
Έͳ͞Μ จࣈΛ͑ΒΕ·͢ΑͶʁ
a
a => 1
͋
͋ => 1
佛
佛 => 1
None
=> 1
None
=> 1
Z͑ͫ̓ͪ̂ͫ̽ ̴̙̤̞͉͚̯̞̠͍A̴̵̜̰͔ ͫ͗ ͢ L̠ͨͧͩ͘ G̴̻͈͍͔̹ ̑͗̎̅͛ ́ Ǫ̵̹̻̝̳ ͂̌
̌͘! ͖̬̰̙̗ ̿̋ ͥ ͥ̂ͣ̐́́͜͞
Z͑ͫ̓ͪ̂ͫ̽ ̴̙̤̞͉͚̯̞̠͍A̴̵̜̰͔ ͫ͗ ͢ L̠ͨͧͩ͘ G̴̻͈͍͔̹ ̑͗̎̅͛ ́ Ǫ̵̹̻̝̳ ͂̌
̌͘! ͖̬̰̙̗ ̿̋ ͥ ͥ̂ͣ̐́́͜͞ => 6
Έͳ͞Μ όΠτΛ͑ΒΕ·͔͢ʁ (UTF-8)
a
a => 1
͋
͋ => 3
佛
佛 => 4
None
=> 4
None
=> 18
Z͑ͫ̓ͪ̂ͫ̽ ̴̙̤̞͉͚̯̞̠͍A̴̵̜̰͔ ͫ͗ ͢ L̠ͨͧͩ͘ G̴̻͈͍͔̹ ̑͗̎̅͛ ́ Ǫ̵̹̻̝̳ ͂̌
̌͘! ͖̬̰̙̗ ̿̋ ͥ ͥ̂ͣ̐́́͜͞
Z͑ͫ̓ͪ̂ͫ̽ ̴̙̤̞͉͚̯̞̠͍A̴̵̜̰͔ ͫ͗ ͢ L̠ͨͧͩ͘ G̴̻͈͍͔̹ ̑͗̎̅͛ ́ Ǫ̵̹̻̝̳ ͂̌
̌͘! ͖̬̰̙̗ ̿̋ ͥ ͥ̂ͣ̐́́͜͞ => 143
͋ͳ͕ͨࢥ͏1จࣈ Ͳ͏͑Δ͖͔ʁ
byteͰ͑ΒΕͳ͍
Unicodeจࣈू߹ จࣈͱ͕ରԠ͢Δ
͋ => 3042
=> 1F914
͜ͷͷ͜ͱΛ ίʔυϙΠϯτ ͱݺͿ
͜ͷίʔυϙΠϯτΛ byteྻͰදݱ͢Δํ๏Λ ΤϯίʔσΟϯάͱ͍͏
UTF-8ͱ͔UTF-16ͱ͔ ΤϯίʔσΟϯάͷҰछ
ͱΓ͋͑ͣ ίʔυϙΠϯτΛ͑Ε ղܾʁ
͍͍͑
=> 1F468 + 200D + 1F469 + 200D + 1F466
࣮ෳͷίʔυϙΠϯτͰ ҰͭͷจࣈʹͳͬͨΓ͢Δ
ਓ͕ؒೝ͍ࣝͯ͠Δ̍จࣈ ॻهૉ(Grapheme cluster) ͱݺΕ͍ͯΔ
Ͳ͏Ε ίʔυϙΠϯτͷྻ͔Β ॻهૉΛऔΓग़ͤΔ͔
ίʔυϙΠϯτ͕ؒ ॻهૉڥքʹͳΔ͔Ͳ͏͔ͷ ݫີͳϧʔϧ͕͋Δ
UAX #29 Unicode Text Segmentation
None
͜ΕΛJSͰ࣮ͯ͠·ͨ͠ github.com/orisano/graphemesplit
ৄ͘͠ UAX #29 Λݟͯ http://unicode.org/reports/tr29/
ݟΒ͵ਓʹʓจࣈͱ ݴΘΕͨͱ͖ʹ ͪΌΜͱ֬ೝ͠Α͏ʂ
1 byte? 1 codepoint? 1 grapheme cluster?