What is the easiest way to generate random integers within a range in Swift?

Question

The method I\'ve devised so far is this:

func randRange (lower : Int , upper : Int) -> Int {
    let difference = upper - lower
    return Int(Float(rand(         


        

Answer 1

If you are into extensions:

extension CountableClosedRange where Bound == Int {
    var randomValue: Int {
        return lowerBound + Int(arc4random_uniform(UInt32(upperBound - lowerBound)))
    }
}

extension CountableRange where Bound == Int {
    var randomValue: Int {
        return lowerBound + Int(arc4random_uniform(UInt32(upperBound - lowerBound)))
    }
}

(0...6).randomValue
(0..<7).randomValue