nguyentruongky

func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
        animateFading(fromController: selectedViewController, toController: viewController)
        return true
    }
    
    func animateFading(fromController: UIViewController?, toController: UIViewController?) {
        if fromController == nil || toController == fromController { return }

        guard let selectView = (selectedViewController as? UINavigationController)?.viewControllers.first?.view,
            let newView = (toController as? UINavigationController)?.viewControllers.first?.view else { return }

nguyentruongky

func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
        animateSliding(fromController: selectedViewController, toController: viewController)
        return false
    }

func animateSliding(fromController: UIViewController?, toController: UIViewController?) {
        
        guard let fromController = fromController, let toController = toController  else { return }
        guard let fromIndex = viewControllers?.index(of: fromController),
            let toIndex = viewControllers?.index(of: toController) else { return }

nguyentruongky

let userName = "myUsername"
let password = "myPassword"
let authString = userName + ":" + password
let credentialData = authString.dataUsingEncoding(NSUTF8StringEncoding)!
let base64Credentials = credentialData.base64EncodedStringWithOptions([])

let headers = ["Authorization": "Basic " + base64Credentials]
let url = URL(string: api)!
Alamofire.request(url, method: .post,
                parameters: params,

nguyentruongky

struct ogeSystemCalendar {
    let eventStore = EKEventStore()
    func addEvent(title: String, startDate: Date,
                  endDate: Date, notes: String?) {
        eventStore.requestAccess(to: .event) { (granted, error) in
            if granted == false {
                DispatchQueue.main.async {
                    self.tellNoPermission() }
                return

nguyentruongky

class Animator {
    var view = UIView()
    lazy var dropZone = self.makeDropZone()
    var dragImageView: UIImageView?
    var startPoint = CGPoint.zero
    var recognizer: UILongPressGestureRecognizer?
    
    private func makeDropZone() -> UIView {
        let dropZoneEdge = 250
        let dropZoneMissingEdge: CGFloat = 50

nguyentruongky

extension UIView {
    static let loadingViewTag = 1938123987
    func showLoading(style: UIActivityIndicatorView.Style = .gray, color: UIColor? = nil, scale: CGFloat = 1) {
        var loading = viewWithTag(UIView.loadingViewTag) as? UIActivityIndicatorView
        if loading == nil {
            loading = UIActivityIndicatorView(style: style)
        }
        loading?.scale(value: scale)
        if let color = color {
            loading?.color = color

nguyentruongky

func setProcess(visible: Bool,
                         style: UIActivityIndicatorView.Style = .white) {
    if visible {
        titleLabel?.layer.opacity = 0
        isEnabled = false
        let indicator = UIActivityIndicatorView(style: style)
        indicator.translatesAutoresizingMaskIntoConstraints = false
        indicator.tag = 12398137
        indicator.startAnimating()
        addSubview(indicator)

nguyentruongky

//
//  UITextField.swift
//  kLibrary
//
//  Created by Ky Nguyen on 8/27/16.
//  Copyright © 2016 Ky Nguyen. All rights reserved.
//

import UIKit

nguyentruongky

// Online C++ compiler to run C++ program online
#include <iostream>
#include <string>
using namespace std;

struct Sach
{
    string id;
    string tenSach;
    string tacGia;