unresolved identifier

init(weatherDictionary: NSDictionary){
    let currentWeather = weatherDictionary["currently"] as NSDictionary

    temperature = currentWeather["temperature"] as Int
    humidity = currentWeather["humidity"] as Double
    precipProbability = currentWeather["precipProbability"] as Double
    summary = currentWeather["summary"] as String
    icon = currentWeather["icon"] as String

    let currentTimeIntValue = currentWeather["time"] as Int
    currentTime = dateStringFromUnixtime(currentTimeIntValue)
}

func dataStringFromUnixtime(uinixTime: Int) -> String{
    let timeInSeconds = NSTimeInterval(unixTime)
    let weatherDate = NSDate(timeIntervalSince1970: timeInSeconds)

    let dateFormatter = NSDateFormatter()
    dateFormatter.timeStyle = .ShortStyle

    return dateFormatter.stringFromDate(weatherDate)
}