if I rewrite this

fun findWindowSettings(name:String): IniData? {
    val id = hash(name, 0)
    return g.settings.firstOrNull { it.id == id }
}

as

fun findWindowSettings(name:String) = g.settings.firstOrNull { it.id == hash(name, 0) }

will be the

hash()

result cached or executed each time?

elect: It will be executed each time.

then I'll leave as it is, thanks

@elect Also, I might be missing some context on your code but basing equality on hashing is dangerous since two different objects can have the same hash

thanks for the tip