The compiler needs to be extremely clever on @tailrec for not blowing up the L1 cache on this code. To me, this looks like a perfect example of a developer thi

The compiler needs to be extremely clever on @tailrec for not blowing up the L1 cache on this code. To me, this looks like a perfect example of a developer thinking they're very smart while they're actually writing code that's worse that its naive counterpart version (a good summary of Scala in my experience).