Kotlin メモ : mapNotNull

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/map-not-null.html


val list = (0 until adapter.count) .map { adapter.item(it) } .filterNotNull() .toList() mapNotNull 使用 val list = (0 until adapter.count) .mapNotNull { adapter.item(it) } .toList()