Map an array to another array

 Problem

I have an array and want to map its values to a different array, based on a given transformation.

 Recipe


// Initialize the Array
var a = [1,2,3,4,5,6]

// Map values to their doubles: 1->2, 2->4, etc.

var b = a.map { $0 * 2 }
print(b)

 Playground