class Person {
    var age: Int

    init(_ val: Int) {
        age = val
    }
}

struct Random {
    static func within(range: ClosedInterval<Int>) -> Int {
        return Int(arc4random_uniform(UInt32(range.end - range.start + 1))) + range.start
    }
}

var array: [Person] = []

println("count, custom, filter")
for i in 0..<10000 {
    let time = NSDate()
    array.removeAll({$0.age > 60})
    print("\(i); \(Int(round(-1000000000 * time.timeIntervalSinceNow))); ")

    let time2 = NSDate()
    array.removeMatching({$0.age > 60})
    println("\(Int(round(-1000000000 * time2.timeIntervalSinceNow)))")

    array.append(Person(Random.within(0...122)))
}