Mastering High Performance with Kotlin

The buildSequence function

We can try using the buildSequence function, which looks like this:

public fun <T> buildSequence(builderAction: suspend SequenceBuilder<T>.() -> Unit): Sequence<T> = Sequence { buildIterator(builderAction) }

The buildIterator function looks as follows:

public fun <T> buildIterator(builderAction: suspend SequenceBuilder<T>.() -> Unit): Iterator<T> {    val iterator = SequenceBuilderIterator<T>()    iterator.nextStep = builderAction.createCoroutineUnchecked(receiver = iterator, completion = iterator)    return iterator

The buildSequence function just returns an instance of the Iterator type and can be used as follows:

fun coroutinesSequenceOrder(amountOfCakes: Int) = buildSequence {    val baker = Baker() (0 until amountOfCakes) ...