Generating random values in Swift between two integer values

This is an option for Swift 4.2 and above using the random() method, which makes it easy!

let randomInt = Int.random(in: 10...50)

The range can be a closed (a...b) or half open (a..<b) range.

If you want a reusable function with simple parameters:

func generateRandomNumber(min: Int, max: Int) -> Int {
    let randomNum = Int(arc4random_uniform(UInt32(max) - UInt32(min)) + UInt32(min))
    return randomNum
}

try this

let randomNumber = arc4random_uniform(40) + 10
println(randomNumber)

in general form

let lower : UInt32 = 10
let upper : UInt32 = 50
let randomNumber = arc4random_uniform(upper - lower) + lower
println(randomNumber)