Upgrade to Pro — share decks privately, control downloads, hide ads and more …

In the beginning was TXT

Avatar for Markus Wein Markus Wein
October 02, 2014
Programming
130
0

In the beginning was TXT

A very short overview of the history of encodings, given at Vienna.rb on 2014-10-02

Avatar for Markus Wein

Markus Wein

October 02, 2014

More Decks by Markus Wein

See All by Markus Wein
Command Line Productivity
Avatar for Markus Wein cypher
1
170
A crash intro to deliberate practice
Avatar for Markus Wein cypher
0
140
Keeping Your PostgreSQL Data Save
Avatar for Markus Wein cypher
0
150
Ghost in the State Machine
Avatar for Markus Wein cypher
2
340
n Things You Didn't Know About PostgreSQL (Rubyslava & PyVo 2014 Edition)
Avatar for Markus Wein cypher
1
270
How to Become a Better Developer
Avatar for Markus Wein cypher
2
1.8k
An Introduction to Rust
Avatar for Markus Wein cypher
1
8.3k
How to Become a Better Developer
Avatar for Markus Wein cypher
1
270
A Very Short Overview of Vagrant
Avatar for Markus Wein cypher
0
8.1k

Other Decks in Programming

See All in Programming
Moments When Things Go Wrong
Avatar for Aurimas Liutikas aurimas
3
130
GitHub Copilot CLIのいいところ
Avatar for tkym htkym
2
1.2k
AI時代のUIはどこへ行く？その2！
Avatar for Yusuke Wada yusukebe
16
5.3k
Transactional Change Stream Processing With Debezium and Apache Flink
Avatar for Gunnar Morling gunnarmorling
1
140
軽量Java基盤の設計 DIコンテナに頼らない、長期保守と1秒起動の実現 JJUG CCC 2026 Spring
Avatar for Masaaki Takahashi macha64
0
270
AIエージェントと協働するCLI開発 — BunとOpenClawで学んだこと
Avatar for よしこ yoshikouki
1
230
TSKaigi2026-静的解析への投資がAI時代のコード品質を支える ── カスタムESLintルールの設計と運用
Avatar for HayatoKudou hayatokudou
7
1.3k
Make SRE Operations Easier with Azure SRE Agent
Avatar for KAMEGAWA Kazushi kkamegawa
0
2.4k
Copilot CLI の継戦能力を高める コンテキスト管理
Avatar for Nozomuts nozomutu
1
1.1k
Technical Debt: Understanding it Rightly, Engaging it Rightly #LaravelLiveJP
Avatar for shogogg shogogg
0
180
Oxlintのカスタムルールの現況
Avatar for syumai syumai
5
920
Java × distroless で 軽量なコンテナイメージを / Java on Distroless
Avatar for Daisuke Garaike contour_gara
0
430

Featured

See All Featured
Primal Persuasion: How to Engage the Brain for Learning That Lasts
Avatar for Mike Taylor tmiket
0
350
Balancing Empowerment & Direction
Avatar for Lara Hogan lara
6
1.1k
GitHub's CSS Performance
Avatar for Jon Rohan jonrohan
1033
470k
DevOps and Value Stream Thinking: Enabling flow, efficiency and business value
Avatar for Helen Beal helenjbeal
1
210
Redefining SEO in the New Era of Traffic Generation
Avatar for Szymon Słowik szymonslowik
1
320
Noah Learner - AI + Me: how we built a GSC Bulk Export data pipeline
Avatar for Tech SEO Connect techseoconnect
PRO
0
190
Making Projects Easy
Avatar for Brett Harned brettharned
120
6.7k
Information Architects: The Missing Link in Design Systems
Avatar for Michelle Chin soysaucechin
0
950
Why Mistakes Are the Best Teachers: Turning Failure into a Pathway for Growth
Avatar for Umar Saidu Auna auna
0
150
JavaScript: Past, Present, and Future - NDC Porto 2020
Avatar for David Neal reverentgeek
52
5.9k
Optimising Largest Contentful Paint
Avatar for Harry Roberts csswizardry
37
3.7k
Testing 201, or: Great Expectations
Avatar for Joseph Mastey jmmastey
46
8.2k

Transcript

  1. In the beginning was TXT

  2. !

  3. EBCDIC

  4. Source: http://en.wikipedia.org/wiki/EBCDIC

  5. ASCII

  6. "#$%&

  7. None

  8. ä, ö, or å and Ø?

  9. Latin-1 ISO/IEC 8859-1

  10. Latin-*

  11. Windows code pages

  12. Then came the €

  13. (

  14. None

  15. Shift-JIS

  16. This sucks

  17. Unicode!

  18. Unicode!

  19. ✈️ (planes!)

  20. Basic Multilingual Plane

  21. Code Points

  22. U+0041 (LATIN SMALL LETTER A)

  23. Source: http://codepoints.net/U+0041

  24. Grapheme

  25. a a a a a a a

  26. Composite characters

  27. U+0065 U+0301 or U+00E9

  28. e+´ => é é

  29. ´ != ´

  30. Unicode… is not an encoding

  31. UTF-32

  32. UCS-2/UTF-16

  33. UTF-8

  34. Source: http://en.wikipedia.org/wiki/File:UnicodeGrow2b.png

  35. What does it look like?

  36. Codepoint Char ASCII Latin-1 ISO-8859-15 UTF-8 UTF-16 U+0041 A 0x41

    0x41 0x41 0x41 0x00 0x41 U+00C4 Ä - 0xc4 0xc4 0xc3 0x84 0x00 0xc4 U+20AC € - - 0xa4 0xe3 0x82 0xac 0x20 0xac U+C218 ࣻ - - - 0xec 0x88 0x98 0xc2 0x18 Encoding comparison Source: http://perlgeek.de/en/article/encodings-and-unicode

  37. Remember: Just because someone claims it’s UTF-8, doesn’t mean it

    is