KotlinCollection Opsreduce
flatMap

reduceCollection Ops

fold

Accumulates value starting with the first element and applying operation from left to right.

Syntax

collection.reduce { acc, e -> }

Example

Enter values below to update the example in real time.

val
nums
listOf
reduce
acc
println
val nums = listOf(1, 2, 3, 4, 5)
val sum = nums.reduce { acc, n -> acc + n }
println(sum) // 15