mikru1688

//
//  AppDelegate.swift
//  UseUITextFieldDelegateToValidate
//
//  Created by Frank.Chen on 2017/1/15.
//  Copyright © 2017年 Frank.Chen. All rights reserved.
//

import UIKit

mikru1688

    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.view.backgroundColor = UIColor.white
        
        // 身份證號
        let idLbl: UILabel = UILabel()
        idLbl.frame = CGRect(x: 0, y: 40, width: self.view.frame.size.width / 3, height: 50)
        idLbl.font = UIFont.systemFont(ofSize: 20)
        idLbl.textColor = UIColor.black

mikru1688

// MARK: - 字串類別延伸
extension String {
    // 是否含有注音
    func isContainsPhoneticCharacters() -> Bool {
        for scalar in self.unicodeScalars {
            if (scalar.value >= 12549 && scalar.value <= 12582) || (scalar.value == 12584 || scalar.value == 12585 || scalar.value == 19968) {
                return true
            }
        }
        return false

mikru1688

    // MARK: - Delegate
    // ---------------------------------------------------------------------
    // 關閉瑩幕小鍵盤
    func dismissKeyboard() {
        self.view.endEditing(true)
    }
    
    // 當按下右下角的return鍵時觸發
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder() // 關閉鍵盤

mikru1688

    // onChange事件
    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {                        
        print("textField.text: \(textField.text!)")
        print("range: \(range.location)")
        print("string: \(string)")
        print("")
        
        // 不能輸入空白
        if string.isContainsSpaceCharacters() {
            return false

mikru1688

// 建立 serial queue，預設即是 serial queue
let serialQueue = DispatchQueue(label: "serialQueue")

// 建立非同步的 block，非同步狀態下，才能測試 serial 和 concurrent 的差異
serialQueue.async {
    
}

mikru1688

        // 建立Concurrent Queues，並建立同步和非同步的block
        let concurrentQueue: DispatchQueue = DispatchQueue(label: "concurrentQueue", attributes: .concurrent)
        
        serialQueue.async {
            // 非同步化
        }

mikru1688

       // 非同步佇列的使用方式與驗證非同步執行的結果
        let concurrentQueue1: DispatchQueue = DispatchQueue(label: "concurrentQueue1", attributes: .concurrent)
        
        let concurrentQueue2: DispatchQueue = DispatchQueue(label: "concurrentQueue2", attributes: .concurrent)
        
        let concurrentQueue3: DispatchQueue = DispatchQueue(label: "concurrentQueue3", attributes: .concurrent)
        
        concurrentQueue1.async {
            for i in 1 ... 10 {
                print("i: \(i)")

mikru1688

DispatchQueue.main.async {

}        

mikru1688

        let group: DispatchGroup = DispatchGroup()
        
        let queue1 = DispatchQueue(label: "queue1", attributes: .concurrent)
        queue1.async(group: group) {
            // 事件A
            for i in 1 ... 100 {
                print("i: \(i)")
            }
        }
        let queue2 = DispatchQueue(label: "queue2", attributes: .concurrent)