tiktuk

struct Random {
    static func within<B: protocol<Comparable, ForwardIndexType>>(range: ClosedInterval<B>) -> B {
    	let inclusiveDistance = range.start.distanceTo(range.end).successor()
    	let randomAdvance = B.Distance(arc4random_uniform(UInt32(inclusiveDistance.toIntMax())).toIntMax())
    	return range.start.advancedBy(randomAdvance)
    }
    
    static func within(range: ClosedInterval<Float>) -> Float {
        return (range.end - range.start) * Float(Float(arc4random()) / Float(UInt32.max)) + range.start
    }