Using the 'reduce' Function for Accumulating Values

The 'reduce' function in Kotlin allows you to accumulate a collection of values into a single result by applying a binary operation. It takes an initial value and merges it with the elements of the collection, making it particularly useful for operations like summing numbers, concatenating strings, or combining objects.

fun main() {
    val numbers = listOf(1, 2, 3, 4, 5)
    val sum = numbers.reduce { acc, number -> acc + number }
    println("Sum of numbers: $sum") // Output: Sum of numbers: 15
}