how to return string in Ganeric escaping colosure?

[Muhammad Naveed]

struct HttpHandler
{
    func getApiData<T:Decodable>(requestUrl: URL, resultType: T.Type, completionHandler:@escaping(_ result: T?, _ error: String?)-> Void)
    {
        URLSession.shared.dataTask(with: requestUrl) { (responseData, httpUrlResponse, error) in

            if(error == nil && responseData != nil && responseData?.count != 0)
            {
                //parse the responseData here
                let decoder = JSONDecoder()
                do {
                    let result = try decoder.decode(T.self, from: responseData!)
                    _=completionHandler(result, nil)
                }
                catch let error{
                    debugPrint("error occured while decoding = \(error.localizedDescription)")
                    completionHandler(nil, "error occured while decoding = \(error.localizedDescription)")
                }
            }

        }.resume()
    }
}

[Codecat15]

I didn't check this one out sorry for the late response. I think rather returning a string it's a good idea to return an object as we did in our API series, over there we can make use of an object than a single string. I will close this issue for now, but then if you have more questions or if you have faced any challenges then please feel free to re-open this