inline fun <R : Comparable<R>> CharSequence.minBy( selector: (Char) -> R ): Char?
Returns the first character yielding the smallest value of the given function or null if there are no characters.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val list = listOf("abcd", "abc", "ab", "abcde")
val shortestString = list.minBy { it.length }
println(shortestString) // ab
val emptyList = emptyList<String>()
val emptyMin = emptyList.minBy { it.length }
println(emptyMin) // null
//sampleEnd
}
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https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/min-by.html