jsonDecodable.swift

extension CurrentWeather: JSONDecodable {
    init?(JSON: [String : AnyObject]) {
        
        guard let temperature = JSON["temperature"] as? Double,
        humidity = JSON["humidity"] as? Double,
        precipitationProbability = JSON["precipProbability"] as? Double,
        summary = JSON["summary"] as? String,
            iconString = JSON["icon"] as? String else {
                return nil
        }
        
        let icon = WeatherIcon(rawValue: iconString).image
        
        self.temperature = temperature
        self.humidity = humidity
        self.precipitationProbability = precipitationProbability
        self.summary = summary
        self.icon = icon
    }
}