How do I reduce collections to a single value in Swift?

In Swift, you can reduce collections to a single value using the `reduce` function. This function iteratively combines the elements of a collection into a single value based on a closure you provide. The closure takes two arguments: the accumulated value and the current element, returning the new accumulated value.

Here's an example of how to use the `reduce` function with an array of integers to calculate the sum of its elements:


        let numbers = [1, 2, 3, 4, 5]
        let sum = numbers.reduce(0) { (result, number) in
            result + number
        }
        print(sum) // Output will be 15