JSON, Swift, HTTP Headers and API’s

JSONtoDictionaryAPIwithHeaders.swift

//: Playground - noun: a place where people can play
import Foundation
import XCPlayground
import PlaygroundSupport
import UIKit

struct Industry: Codable {
    let name: String
    let id: Int
    
    func getString() {
        print( "Name: \(name), Id: \(id)" )
    }
}

var industries = [Int: Industry]()

let urlString = "http://joben.test/industry"
let session = URLSession.shared
let url = URL(string: urlString)!
var request = URLRequest(url: url)

request.addValue("application/json", forHTTPHeaderField: "Accept")

session.dataTask(with: request, completionHandler: { (data: Data?, response: URLResponse?, error: Error?) in
    
    if let data = data
    {
        do{
            let json = try JSONSerialization.jsonObject(with: data, options: [])
            if  let object = json as? [Any] {
                for anItem in object as! [Dictionary<String, AnyObject>] {
                    let industryName = anItem["name"] as! String
                    let industryID = anItem["id"] as! Int
                    let industry = Industry(name: industryName, id:industryID)
                    industries[industryID] = industry
                    industries[industryID]?.getString()
                }
            }
        } catch {
            print(error)
        }
    }
}).resume()
PlaygroundPage.current.needsIndefiniteExecution = true