saikiran

We use reduce function to combine all the items in a collection to create a new value. In the below example, reduce function takes two parameters, first parameter is a initial value and second...

As the name suggests this function will flatten a the collection of collections. let collections = [[1,2,3],[4,5],[6,7,8]] let flat = collections.flatMap { $0 } print(flat)//[1, 2, 3, 4, 5, 6, 7,...