[英]how can I init struct: Codable without default value
我想从 API 获取 Json,并使用Codable
协议,但是当我初始化发布的 var 时,出现错误。
struct Search: Codable {
let result: [String]
}
class SearchViewModel: ObservableObject {
@Published var data = Search()
func loadData(search: String) {
var urlComps = URLComponents(string: getUrl)
let queryItems = [URLQueryItem(name: "result", value: search)]
urlComps!.queryItems = queryItems
let url = urlComps!.url!.absoluteString
guard let Url = URL(string: url) else { return }
URLSession.shared.dataTask(with: Url) { (data, res, err) in
do {
if let data = data {
let decoder = JSONDecoder()
let result = try decoder.decode(Search.self, from: data)
DispatchQueue.main.async {
self.data = result
}
} else {
print("there's no Data😭")
}
} catch (let error) {
print("Error!")
print(error.localizedDescription)
}
}.resume()
}
}
改变
@Published var data:Search?
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