Search for a list of itunes tracks and put the results into a collection of Codables

iTunesTrackList.swift

//: Playground - noun: a place where people can play

import UIKit
import Foundation
import PlaygroundSupport

// so we can run asynchronous code in a playground
PlaygroundPage.current.needsIndefiniteExecution = true

let iso8601Full: DateFormatter =
{
    let formatter = DateFormatter()
    formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
    formatter.calendar = Calendar(identifier: .iso8601)
    formatter.timeZone = TimeZone(secondsFromGMT: 0)
    formatter.locale = Locale(identifier: "en_US_POSIX")
    
    return formatter
}()

let decoder = JSONDecoder()
decoder.dateDecodingStrategy = .formatted(iso8601Full)

struct iTunesTrackList: Codable
{
    private enum CodingKeys : String, CodingKey
    {
        case count = "resultCount"
        case tracks = "results"
    }
    
    let count : UInt64
    let tracks : [iTunesTrack]
}

struct iTunesTrack: Codable, CustomStringConvertible
{
    let artistName : String
    let trackName : String
    let releaseDate: Date
    
    var description: String
    {
        return "\(artistName) - \(trackName) - \(releaseDate)"
    }
}

let url = URL(string: "https://itunes.apple.com/search?media=music&entity=musicTrack&term=beatles&limit=10")
let task = URLSession.shared.dataTask(with: url!) { (data, response, error) in
    
    guard let data = data else
    {
        return
    }
    
    if let list = try? decoder.decode(iTunesTrackList.self, from: data)
    {
        
        list.tracks.forEach({ (track) in
            print(track)
        })
        
    }
    else
    {
        print("No tracks")
    }
    
}

task.resume()