Decimal to Double conversion in Swift 3

Question

I\'m migrating a project from Swift 2.2 to Swift 3, and I\'m trying to get rid of old Cocoa data types when possible.

My problem is

Answer 1

Solution that works in Swift 4

let double = 3.14
let decimal = Decimal(double)
let doubleFromDecimal = NSDecimalNumber(decimal: decimal).doubleValue
print(doubleFromDecimal)