What changed, and when
A reference nobody maintains is a reference nobody should trust. Every change to the data is recorded here, newest first, with the dataset it belongs to.
All changes
23 entries across 15 datasets- ASCII table: Added an automated check that the derived hex, octal, and binary columns agree with the decimal value for every row.
- HTTP status codes: Rebuilt from the IANA registry. Every registered code is now present with its RFC reference, and the widely returned vendor codes are included and labelled as such.
- HTML entities: Expanded within the existing groups and verified against the WHATWG entities.json. Added the Unicode code point per row and a note on which entities predate HTML5.
- Keyboard shortcuts: Added a per sheet source, application version, and check state. Rewrote the opening paragraph of every sheet so it no longer repeats the meta description.
- Greek alphabet: Added the Unicode code point, the HTML entity, and the LaTeX command per letter.
- Braille alphabet: Added the Unicode braille cell per letter, computed from the dot numbers, plus an explicit note that this is Grade 1 and not contracted braille.
- Resistor colour codes: Added a 4, 5, and 6 band calculator. It reads the same digit, multiplier, and tolerance values as the table above it, so it adds no data of its own.
- Git cheat sheet: Added an explicit destructive warning to git restore, which discards uncommitted work that cannot be recovered.
- Keyboard shortcuts: First published with nine application sheets.
- NATO phonetic alphabet: First published with 26 letters and 10 digits.
- International Morse code: First published with letters, digits, and punctuation.
- ASCII table: First published with all 128 code points.
- HTTP status codes: First published with 29 hand picked codes.
- HTML entities: First published with 46 entities.
- Greek alphabet: First published with 24 letters.
- Braille alphabet: First published with the letters A to Z as dot numbers.
- Flag semaphore: First published with the arm positions A to Z.
- Resistor colour codes: First published with the band value table.
- Currency symbols: First published with the common currency symbols.
- Git cheat sheet: First published with 14 everyday commands.
- Markdown cheat sheet: First published with the core syntax.
- Regex cheat sheet: First published with 16 tokens.
- Roman numerals: First published with the symbols and rules.
Dataset versions
Each dataset carries its own version. A change to the values raises the minor number, a rebuild from a different source raises the major, and the version is repeated in the API envelope so a consumer can pin against it.
| Dataset | Version | Records | Last checked against source |
|---|---|---|---|
| NATO phonetic alphabet | 1.0.0 | 36 | not re-verified |
| International Morse code | 1.0.0 | 54 | not re-verified |
| ASCII table | 1.1.0 | 128 | |
| HTTP status codes | 2.0.0 | 74 | |
| HTML entities | 2.0.0 | 193 | |
| Keyboard shortcuts | 1.1.0 | 9 | not re-verified |
| Greek alphabet | 1.1.0 | 24 | |
| Braille alphabet | 1.1.0 | 26 | not re-verified |
| Flag semaphore | 1.0.0 | 26 | not re-verified |
| Resistor colour codes | 1.1.0 | 12 | not re-verified |
| Currency symbols | 1.0.0 | 14 | not re-verified |
| Git cheat sheet | 1.0.0 | 14 | not re-verified |
| Markdown cheat sheet | 1.0.0 | 14 | not re-verified |
| Regex cheat sheet | 1.0.0 | 16 | not re-verified |
| Roman numerals | 1.0.0 | 15 | not re-verified |