But is it possible? `tailrec` is only if you recur...

# advent-of-code

[karelpeeters]

But is it possible? tailrec is only if you recurse only once per call at most, right?

[joelpedraza]

I don't think it has to be the only call. Just the last call.

[karelpeeters]

So if you have to call it for every child only the last one can be tailrec'ed?