Ruby's n.times in Swift

Times.swift

extension SignedInteger {
    func times() -> AnySequence<()> {
        return AnySequence<()>({ () -> AnyIterator<()> in
            var count: Self = 0
            return AnyIterator<()>({
                if count == self {
                    return nil
                }
                defer { count = count + 1 }
                return ()
            })
        })
    }
    
    func timesWithIndex() -> AnySequence<Self> {
        return AnySequence<Self>({ () -> AnyIterator<Self> in
            var count: Self = 0
            return AnyIterator<Self>({
                if count == self {
                    return nil
                }
                defer { count = count + 1 }
                return count
            })
        })
    }

}

5.times().forEach {
    print("hi")
}


5.timesWithIndex().forEach { i in
    print("hey", i)
}