JSONtoDictionaryAPI.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]()

    do {
        if let file = URL(string: "http://joben.test/industry") {
            let data = try Data(contentsOf: file)
            let json = try JSONSerialization.jsonObject(with: data, options: [])
            if let object = json as? [String: Any] {
                // json is a dictionary
                print(object)
            } else if let object = json as? [Any] {
                // json is an array
                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()
                }
            } else {
                print("JSON is invalid")
            }
        } else {
            print("no file")
        }
    } catch {
        print(error.localizedDescription)
    }

PlaygroundPage.current.needsIndefiniteExecution = true