el-hoshino

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.

        // アプリウィンドウを設定します。
        self.window = UIWindow(frame: UIScreen.main.bounds)

        // ウィンドウをヴィジブルにします。
        self.window?.makeKeyAndVisible()

        // ウィンドウの rootViewController を viewController に設定します。

el-hoshino

let testString = "test"
let testFlag = true
let testInt = 1

let testArray = [testString, testFlag, testInt]

el-hoshino

let randomIntArray = [Int](count: 10, repeatedValue: 0).map { (some: Int) -> Int in
    let randomUInt = arc4random_uniform(100) // 0 ..< 100 の乱数を作る
    return Int(randomUInt) - 50
}

el-hoshino

    int arrayA[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
    int arrayB[10];

    for (int i = 0; i < 10; i++) {
        arrayB[i] = arrayA[i] * arrayA[i];
    }

el-hoshino

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

import UIKit

// オリジナル画像を読み込もう（ファイル名の設定忘れないでね）
let baseImage = UIImage(named: "image.png")!
let baseCIImage = CIImage(image: baseImage)

// Core Image フィルターを #00FFFF の色で設定する
let filterColor = CIColor(red: 0, green: 1, blue: 1)

el-hoshino

class ViewController: UIViewController {

    var settings: UserSettings

    init() {
        self.settings = UserSettings(a: 0, b: false, c: "NO")

        super.init(nibName: nil, bundle: nil)
    }

el-hoshino

let a = 0
switch a {
case Int.min ..< 0:
    print("負数")

case 0:
    print("零")

case 1 ... Int.max:
    print("正数")

el-hoshino

import UIKit

class CallbackButton: UIButton {

    private var action: (() -> Void)?

    init(frame: CGRect, action: (() -> Void)? = nil) {

        self.action = action

el-hoshino

let dict = [1: 2, 3: 4]
let key = 1

if let value = dict[key] {
    print(value)
}

el-hoshino

func getByteArrayFromImage(imageRef: CGImageRef) -> [UInt8] {

    let data = CGDataProviderCopyData(CGImageGetDataProvider(imageRef))
    let length = CFDataGetLength(data)
    var rawData = [UInt8](count: length, repeatedValue: 0)
    CFDataGetBytes(data, CFRange(location: 0, length: length), &rawData)

    return rawData

}