Returns a single list of all elements from results of transform applied to each element.
Syntax
collection.flatMap { transform }Example
Enter values below to update the example in real time.
val→lists→listOf→println→flatMap→it→val lists = listOf(listOf(1, 2), listOf(3, 4))
println(lists.flatMap { it }) // [1, 2, 3, 4]