I don't like

repeat

when you actually use the index, it reads wrong to me. So I'd replace that with a for loop instead. I always like the

StringBuilder

/

apply

combo, so that's fine IMO.

curious that there isn’t a

buildString(String) { ... }

i guess i could easily write one....

Turns out there is a

buildString

with exactly this behavior! https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/build-string.html

oh my!

Ah wait you were talking about the prefix part, my bad I completely misunderstood what you were saying.

lmao no worries

Actually now I'm even more confused, what would you want

buildString(String) { ... }

to do?

StringBuilder(String)

takes a string to initialize the builder -

buildString

could do the same

Hmm I see.

is there any advantage to stringbuilder over just string arithmetic like +?

mostly just the methods that the builder provides