In this Swift tutorial, you will learn how to use the flatMap function in Swift which will flatten an Array of Arrays into a single array of elements. Given an Array of Arrays Let’s consider the following Array of Arrays. let numbers = [ [1,2,3,4], [5,6,7,8], [9,10,11,12]] The above array contains 3 arrays of integers. We…Read More How to Use flatMap in Swift. Code Examples.