Hello :) I am trying to decode a JSON stock market API then store the returned information in an instance of a struct but am getting Thread 1: signal SIGABRT on the struct instance line of code. The JSON data is in an array of objects that would like this: { "pagination": { ... //Not interested in storing this info }, "data": [ { "open": 129.8, "high": 133.04, }, [...] //would be data for other symbols ] } Struct Declaration: struct SingleData: Decodable {     let open: Double     let high: Double   } struct ScrapeStruct: Decodable {   let data: [SingleData] } Struct Instance: var QQQ = try ScrapeStruct(from: Decoder.self as! Decoder) //Thread 1: signal SIGABRT error Target Output says "Could not cast value of type 'Swift.Decoder.Protocol' (0x1db05bc88) to 'Swift.Decoder'". I know that this is in reference to the .self but I tried other things like Decoder() and even SingleData() or ScrapeStruct(). But just got compiler errors about it not being initialized and that it's missing from: Decoder respectively. And with the struct containing an array and me having issues working with individual values like QQQ.high because ScrapeStruct has no member high I just have no idea what is supposed to be here. I don't know if this part of the code is helpful but I will include it anyways just in case. Function: func Scraper() async throws -> ScrapeStruct {    guard let url = URL(string: "MarketStack API")   else {      throw Error.invalidServerResponse     }   var request = URLRequest(url: url)   request.addValue("My Access Code", forHTTPHeaderField: "access_key")   request.addValue("QQQ", forHTTPHeaderField: "symbols")   let (data, _) = try await URLSession.shared.data(for: request)   let scrapeStruct = try JSONDecoder().decode(ScrapeStruct.self, from: data)   return scrapeStruct   } Call Function: Task {     let fetchedInfo = try? await Scraper()           DispatchQueue.main.async {       if let fetched = fetchedInfo {         QQQ = fetched       }     }   } Any help at all would be greatly appreciated. Thanks!

Hello, I am trying to learn more about the different stock market APIs and am working with Polygonio right now. I am using the swift wrapper for it by toniremi (https://github.com/toniremi/PolygonioSwift). The example on the site makes it seem like just doing this should make it work but I am still not producing any requests on Polygonio. Code: import UIKit import PolygonioSwift class ViewController: UIViewController {       override func viewDidLoad() {     super.viewDidLoad()           let polygon = PolygonioSwift.Client(key: "Access Code")           polygon.setDebug(enable: true) polygon.dailyOpenClose(symbol: "symbol", date: "date") { (result: DailyOpenCloseResponse?, err) in if let err = err {      print(err)  } else {      print(result!) //Not sure why force-unwrap is necessary but XCode warns the expression is implicitly coerced from DailyOpenCloseResponse? to 'Any" without it  } } } } But without any compiler or runtime errors the simulation finishes after a few seconds and never produces any requests on Polygon.io. The package declares DailyOpenClose response and the ApiRequest so I am not sure if I need to include it on my ContentView file and even if I do I get other compiler errors but that is for another post I think(let me know and I will include that stuff if necessary).

Hello, I am trying to code an API scraper that will collect Double values in a struct then return them but am getting the title error on the return line of code. Struct Declaration: struct ScrapeStruct: Decodable {   var high: Double   var low: Double   var close: Double   var volume: Double } Error Declaration: enum Error: Error {   case invalidServerResponse } Scrape Function: class dataFetcher { func Scraper() async throws -> ScrapeStruct {    guard let url = URL(string: "someURL")   else {      throw Error.invalidServerResponse     }   let request = URLRequest(url: url)   let (data, _) = try await URLSession.shared.data(for: request)   _ = try JSONDecoder().decode(ScrapeStruct.self, from:data)   return ScrapeStruct.init(high: Double, low: Double, close: Double, volume: Double) // error is here   } } I am self-taught so there's a chance there are some fundamentel misunderstandings so if that's the case any recommendations on where to learn more in place of a solution are appreciated as well because I can't find anything online that's too helpful.