Is
```
println((ints foldLeft accumulator) { (acc, elem) => elem :: acc })
println((ints foldRight accumulator) { (elem, acc) => acc :+ elem })

println((ints /: accumulator) { (acc, elem) => elem :: acc })
println((ints :\ accumulator) { (elem, acc) => acc :+ elem })
```
better or does it give the game away too much..?