foldIndexed
inline suspend fun <E, R> ReceiveChannel<E>.foldIndexed(
initial: R,
operation: (index: Int, acc: R, E) -> R
): R (source)Platform and version requirements: JVM
Accumulates value starting with initial value and applying operation from left to right to current accumulator value and each element with its index in the original channel.
Parameters
operation -
function that takes the index of an element, current accumulator value and the element itself, and calculates the next accumulator value.
The operation is terminal. This function consumes all elements of the original ReceiveChannel.