If You Liked It Then You Should Have Put A String On It

on YouTube ↗19m

" summary

Explains that Unicode assigns code points (over a million possible, ~137k defined in Unicode 12.1) and emoji are just code points rendered by platforms; shows UTF‑8 vs UTF‑16 byte differences and why Swift 3 vs Swift 4 report different character counts; demonstrates building custom emoji like Slack and megamoji by mapping a token to a private use area code point via JSON, running a script to produce a TTF font with embedded images, loading it in the app and getting big emoji that work.

AI-written summary · about

" chapters (8)

1. 0:00Start
2. 5:23114,112 Unicode Code Points 17"Planes" each with 64k code points: U+0000 - U+10FFFF
3. 6:35The Basic Multilingual Plane (BMP) U+0000 - U+FFFF
4. 12:57UNICODE PRIVATE USE AREA
5. 13:31CUSTOM EMOJIS IN YOUR APP
6. 14:59GENERATE CUSTOM FONT
7. 16:00PROFIT!!! BIG
8. 17:45Summary

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