Storing and transmitting is always going to work with low-level storage units like bytes, so your string will need to be converted to that first. But string man

Storing and transmitting is always going to work with low-level storage units like bytes, so your string will need to be converted to that first. But string manipulation is extremely common in programming, and I would think graphemes are the most useful unit here - i.e. as a programmer my preference would be for swift's behaviour.