ken0nek

// フォトライブラリを開く
-(IBAction)openLibrary{

    // 画像の取得先をフォトライブラリに設定
    UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    
    // フォトライブラリを使用可能かどうか判定する
    if ([UIImagePickerController isSourceTypeAvailable:sourceType]) {
        
        // UIImagePickerControllerを初期化・生成

ken0nek

// カメラを起動する
-(IBAction)launchCamera{
    
    // 画像の取得先をカメラに設定
    UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
    
    // カメラが使用可能かどうか判定する
    if ([UIImagePickerController isSourceTypeAvailable:sourceType]) {
        
        // UIImagePickerControllerを初期化・生成

ken0nek

-(IBAction)postToTwitter{
    
    // ServiceTypeをTwitterに設定
    NSString *serviceType = SLServiceTypeTwitter;
    
    // Twitterが利用可能かチェック
    if ([SLComposeViewController isAvailableForServiceType:serviceType]) {
        
        // SLComposeViewControllerを初期化・生成
        SLComposeViewController *twitterPostVC = [[SLComposeViewController alloc] init];

ken0nek

// storyboardに置いたimageViewからCIImageを生成する
let image  = CIImage(CGImage: self.sampleImageView.image?.CGImage)
            
// 顔認識なのでTypeをCIDetectorTypeFaceに指定する
let detector = CIDetector(ofType: CIDetectorTypeFace, context: nil, options: [CIDetectorAccuracy: CIDetectorAccuracyHigh])
            
// 取得するパラメーターを指定する
let options = [CIDetectorSmile : true, CIDetectorEyeBlink : true]
            
// 画像から特徴を抽出する

ken0nek

let num = 1234
let numList = "\(num)".characters.flatMap { Int("\($0)") }
// let numList = String(num).characters.flatMap { Int(String($0)) }

print(numList)
// [1, 2, 3, 4]

ken0nek

let num = 1234

// Int -> [String]
let numList = String(num).characters.flatMap { String($0) }
print(numList)
// ["1", "2", "3", "4"]

let opeList = ["+", "-", "*"]
let zipped = zip(numList, opeList + [""]) // 要素数を合わせる

ken0nek

let numList = [5, 8, 4, 2].map { String(Double($0)) } // 割り算を正確に行うためにDouble型への変換をはさむ
print(numList)
// ["5.0", "8.0", "4.0", "2.0"]

let opeList = ["+", "/", "-"]

let zipped = zip(numList, opeList + [""])
let equation = zipped.reduce("") { $0 + $1.0 + $1.1 }
print(equation)

ken0nek

[1, 2, 3, 4] -> ["0:1", "1:2", "2:3", "3:4"]

ken0nek

let romanStrs = ["M", "D", "C", "L", "X", "V", "I"]
let romanNums = [1000, 500, 100, 50, 10, 5, 1]

let romanToNum = zip(romanStrs, romanNums).reduce([String: Int]()) { (dic, t) in
    var dic = dic
    dic[t.1] = t.0
    return dic
}

ken0nek

let start = NSDate()
// someMethod
let timeElapsed = -startTime.timeIntervalSinceNow
print(timeElapsed)