🚧 Probably useless micro-optimisation
🚧 Probably useless micro-optimisation

Most compilers will probably see the modulo 10 operation and convert
this size_t to an unsigned char by themselves.
Better leave it unsigned though, as this could break with very big
numbers.

emojicode/emojicode,emojicode/emojicode,emojicode/emojicode,emojicode/emojicode