convert string any to json swift

let string = #"{"name": "watashi", "number": 42, "pi": 3.141592, "array": [2, 3, 5, 7, 11, 13]}"# let data = string.data(using: .utf8)! let object = try! JSONSerialization.jsonObject(with: data, options: []) let jsonObject = object as! [String: Any] let nameField = jsonObject["name"] as? String let numberField = jsonObject["number"] as? Int let piField = jsonObject["pi"] as? Double let arrayField = jsonObject["array"] as? [Any] print("The name argument is \(nameField)") print("The number is \(numberField)") print("The value of pi is \(piField)") print("the array value is \(arrayField)")

json to swift

//Well use the data from the source website as shown below
//We can seperate this data into some key points:

/*
	id
	firstName
	lastName
	email
	gender
	ipAddress
*/

//We then make a struct with those propeties

struct TestData: Decodable {
  
  var id: String
  var firstName: String
  var lastName: String
  var email: String
  var gender: String
  var ipAddress: String
}

//We use the Decodable protocol so that we can decode the json into TestData
/*
	Another thing to note:
	Since there is an array of this TestData, we can make another struct with a variable consisting of an array of TestData

*/

struct ListOfData: Decodable {
  var listData: [TestData]
}

//(Assuming you already know how to get data from the web)

//Now, we can decode the information gotten from the website into TestData:

let decoder = JSONDecoder() //Creates an instance of the json decoder
let data = decoder.decode(ListOfData.self, data: //Data gotten from the test site)

//The decoder.decode... basically decodes the data into the ListOfData type
//So, if I print:
	print(data[0].id)
//It prints 1, as the first id of the entire data set is a 1

Posted by: Guest on September-11-2021

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