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#stdlib
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# stdlib
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Rob Elliot
01/30/2022, 3:00 PMCandidate mirror function to
fun <T> Iterable<T>.withIndex(): Iterable<IndexedValue<T>>fun <T> Iterable<IndexedValue<T>>.withoutIndex(): List<T> = map(IndexedValue<T>::value)e
ephemient
01/30/2022, 6:27 PMwithIndex provides a indexed view, not a copy, while map copies eagerly
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Rob Elliot
01/30/2022, 6:53 PMI'm sure there's a better implementation, it's the concept I'm suggesting. Perhaps I should just have gone with the signature:
fun <T> Iterable<IndexedValue<T>>.withoutIndex(): Iterable<T>d
Dominaezzz
01/30/2022, 8:03 PMFeels a bit specific. Like what if the indexes are wrong.
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Rob Elliot
01/30/2022, 8:11 PMWhat if they are? It's just to discard them. Iteration order would be unchanged.
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marcinmoskala
02/02/2022, 9:53 PM Copy code
fun <T> Iterable<IndexedValue<T>>.withoutIndex(): Iterable<T> = UnindexedIterable(this)
internal class UnindexedIterable<T>(private val iterable: Iterable<IndexedValue<T>>) : Iterable<T> {
override fun iterator(): Iterator<T> = UnindexedIterator(iterable.iterator())
}
internal class UnindexedIterator<out T>(private val iterator: Iterator<IndexedValue<T>>) : Iterator<T> {
override fun hasNext(): Boolean = iterator.hasNext()
override fun next(): T = iterator.next().value
}2 Views