filter
fun <C : MutableCollection<in T>, T : Any> Sequence<T?>.filterNotNullTo(destination: C): C
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Appends all elements that are not null to the given destination.
The operation is terminal.
Samples
import samples.*
import kotlin.test.*
fun main() {
//sampleStart
val numbers: List<Int?> = listOf(1, 2, null, 4)
val nonNullNumbers = mutableListOf<Int>()
assertPrints(nonNullNumbers, "[]")
numbers.filterNotNullTo(nonNullNumbers)
assertPrints(nonNullNumbers, "[1, 2, 4]")
//sampleEnd
}