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Accessing values in struct that are saved using Json and codeable

📷[Swift]
override func viewDidLoad() { super.viewDidLoad() let jsonUrlString = "https://www.alphavantage.co/query?function=FX_INTRADAY&from_symbol=EUR&to_symbol=USD&interval=5min&apikey=demo" let urlObj = URL(string: jsonUrlString) URLSession.shared.dataTask(with: urlObj!) {(data, response, error) in guard let data = data else { return } do { let forex = try JSONDecoder().decode(Root.self, from: data) print(forex.metaData) if let latestTime = forex.metaData["4. Last Refreshed"], let latestForex = forex.timeSeriesFX5Min[latestTime] { print(latestForex) } } catch { print(error) } }.resume() } } struct Root: Codable { let metaData: [String: String] let timeSeriesFX5Min: [String:Forex] enum CodingKeys: String, CodingKey { case timeSeriesFX5Min = "Time Series FX (5min)" case metaData = "Meta Data" } } // MARK: - TimeSeriesFX5Min struct Forex: Codable { let the1Open, the2High, the3Low, the4Close: String enum CodingKeys: String, CodingKey { case the1Open = "1. open" case the2High = "2. high" case the3Low = "3. low" case the4Close = "4. close" }
That's the code when am trying to access the struct to be able to get to use the variables that are stored there it keeps throwing an error and am unable to access them to perform an operation.
submitted by theeama to programminghelp [link] [comments]

Unable to read codable struct values

I am trying to access the values in the Forex struct shown below because I want to perform some basic calculations.
The first part of the code reads the JSON API and saves the most recent values in the struct Forex. This is printed out to console to confirm that it's working and i am reading and saving the values.

The next part is where i am having a headache, i know the values are being saved when the program is run but i am unable to access the values stored in the struct.

I have tried reading it normal way Forex.open, i have tried var a = Forex () and still no hope.

All help is really appreciated

let jsonUrlString = "https://www.alphavantage.co/query?function=FX_INTRADAY&from_symbol=EUR&to_symbol=USD&interval=5min&apikey=demo"
let urlObj = URL(string: jsonUrlString)
URLSession.shared.dataTask(with: urlObj!) {(data, response, error) in
guard let data = data else { return }
do {
let forex = try JSONDecoder().decode(Root.self, from: data)
print(forex.metaData)
if let latestTime = forex.metaData["4. Last Refreshed"], let latestForex = forex.timeSeriesFX5Min[latestTime] {
print(latestForex)
}
} catch {
print(error)
}
}.resume()
}
}
struct Root: Codable {
let metaData: [String: String]
let timeSeriesFX5Min: [String:Forex]
enum CodingKeys: String, CodingKey {
case timeSeriesFX5Min = "Time Series FX (5min)"
case metaData = "Meta Data"
}
}
// MARK: - TimeSeriesFX5Min
struct Forex: Codable {
let open, high, low, close: String
enum CodingKeys: String, CodingKey {
case open = "1. open"
case high = "2. high"
case low = "3. low"
case close = "4. close"
}
submitted by theeama to swift [link] [comments]

Accessing values in struct that are saved using Json and codeable

override func viewDidLoad() {
super.viewDidLoad()
let jsonUrlString = "https://www.alphavantage.co/query?function=FX\_INTRADAY&from\_symbol=EUR&to\_symbol=USD&interval=5min&apikey=demo"
let urlObj = URL(string: jsonUrlString)
URLSession.shared.dataTask(with: urlObj!) {(data, response, error) in
guard let data = data else { return }
do {
let forex = try JSONDecoder().decode(Root.self, from: data)
print(forex.metaData)
if let latestTime = forex.metaData["4. Last Refreshed"], let latestForex = forex.timeSeriesFX5Min[latestTime] {
print(latestForex)
}
} catch {
print(error)
}
}.resume()
}
}
struct Root: Codable {
let metaData: [String: String]
let timeSeriesFX5Min: [String:Forex]
enum CodingKeys: String, CodingKey {
case timeSeriesFX5Min = "Time Series FX (5min)"
case metaData = "Meta Data"
}
}
// MARK: - TimeSeriesFX5Min
struct Forex: Codable {
let the1Open, the2High, the3Low, the4Close: String
enum CodingKeys: String, CodingKey {
case the1Open = "1. open"
case the2High = "2. high"
case the3Low = "3. low"
case the4Close = "4. close"
}
That's the code when am trying to access the struct to be able to get to use the variables that are stored there it keeps throwing an error and am unable to access them to perform an operation.
submitted by theeama to CodingHelp [link] [comments]

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