I was looking some implementation of _Collections....

# announcements

[Dias Neto, J.]

I was looking some implementation of _Collections.kt and there is the fold method:

public inline fun <T, R> Iterable<T>.fold(initial: R, operation: (acc: R, T) -> R): R {
   var accumulator = initial
   for (element in this) accumulator = operation(accumulator, element)
   return accumulator
}

Question: what is the needed of acc variable? it could be only: operation: (R, T) -> R it is not?