I'm having trouble working out why the following function isn't returning:
func getCurrentWeather(cityID: Int) -> Weather? {
let cityIDAsString = String(cityID)
guard let url = getCityWeatherURL(from: cityIDAsString) else { return nil }
var weather: Weather?
self.data(url: url, sucess: { (data) in
weather = self.convertDataToWeather(data: data)
print(weather)
}) { (error) in
print(#function, error)
}
print(weather)
return weather
}
(I've not posted getCityWeatherURL as that's working when printing it's value).
When I print weather the first time, it's correct and not nil so I know my other functions are working correctly. But when I later try to return the value of weather, it returns nil.
The other relevant function is this I think:
private func data(url: URL, sucess: @escaping (Data) -> Void, failure: @escaping (Error) -> Void) {
let task = URLSession.shared.dataTask(with: url) { (data, _, error) in
if let error = error {
failure(error)
} else if let data = data {
sucess(data)
}
}
task.resume()
}
If anyone is able to spot my problem I'd really appreciate it! (Notes on my general code are welcome too!)
