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I think the byteyarn library mentioned elsewhere in this thread meets your requirements: https://mcyoung.xyz/2023/08/09/yarns/ https://mcyoung.xyz/2023/08/09/y

• nextaccountic 2y ago
  This is perfect, thanks! ... well except it stores up to 15 bytes inline rather than using the UTF-8 trick to cram an extra byte. (But maybe it can't; or at least, ByteYarn really can only store 15 bytes, even though Yarn could store 16 bytes maybe, but this would pose problems when converting between those types because I suppose this conversion is zero cost)