stevenchou1130

var mediaJSON = { "categories" : [ { "name" : "Movies",
        "videos" : [ 
		    { "description" : "Big Buck Bunny tells the story of a giant rabbit with a heart bigger than himself. When one sunny day three rodents rudely harass him, something snaps... and the rabbit ain't no bunny anymore! In the typical cartoon tradition he prepares the nasty rodents a comical revenge.\n\nLicensed under the Creative Commons Attribution license\nhttp://www.bigbuckbunny.org",
              "sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" ],
              "subtitle" : "By Blender Foundation",
              "thumb" : "images/BigBuckBunny.jpg",
              "title" : "Big Buck Bunny"
            },
            { "description" : "The first Blender Open Movie from 2006",
              "sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4" ],

stevenchou1130

extension String {
    func versionToInt() -> [Int] {
        return self.components(separatedBy: ".").map { Int.init($0) ?? 0 }
    }
}

stevenchou1130

let currentVersion = appVersion.versionToInt()
let storeVersion = json["results"][0]["version"].stringValue.versionToInt() 
let isCurrentVersionNewer = storeVersion.lexicographicallyPrecedes(currentVersion)

stevenchou1130

let appVersion = Bundle.main.infoDictionary!["CFBundleShortVersionString"] as? String
let storeVersion = json["results"][0]["version"].stringValue
if appVersion == storeVersion {
 // 已是最新版本
} else {
 // Do something
}

stevenchou1130

import UIKit
import SwiftyJSON

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

stevenchou1130

print(steven.description)
// I belong to iOS team.

stevenchou1130

protocol Engineer: CustomStringConvertible {
    var team: Team { get }
    var canDevelopiOS: Bool { get }
}

extension CustomStringConvertible where Self: Engineer {
    var description: String {
        switch team {
        case .android:
            return "I belong to Android team."

stevenchou1130

struct Sam: Engineer, Swiftable {
    let team: Team
    let isKnowSwift: Bool
}

let sam = Sam(team: .android, isKnowSwift: true)
print("Sam can develop iOS: \(sam.canDevelopiOS)")
// Sam can develop iOS: true

stevenchou1130

struct Sam: Engineer {
    let team: Team
    let canDevelopiOS: Bool
}

let sam = Sam(team: .android, canDevelopiOS: true)
print("Sam can develop iOS: \(sam.canDevelopiOS)”)
// Sam can develop iOS: true

stevenchou1130

struct Sam: Engineer {
    let team: Team
}

let sam = Sam(team: .android)
print("Sam can develop iOS: \(sam.canDevelopiOS)”)
// Sam can develop iOS: false