max
inline fun <T, R : Comparable<R>> Sequence<T>.maxByOrNull(selector: (T) -> R): T?
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Returns the first element yielding the largest value of the given function or null if there are no elements.
The operation is terminal.
Since Kotlin
1.4
Samples
import samples.*
import kotlin.test.*
fun main() {
//sampleStart
val nameToAge = listOf("Alice" to 42, "Bob" to 28, "Carol" to 51)
val oldestPerson = nameToAge.maxByOrNull { it.second }
assertPrints(oldestPerson, "(Carol, 51)")
val emptyList = emptyList<Pair<String, Int>>()
val emptyMax = emptyList.maxByOrNull { it.second }
assertPrints(emptyMax, "null")
//sampleEnd
}