haikieu

//
//  SwiftUITimer.swift
//  
//
//  Created by Hai Kieu on 7/13/23.
//  https://medium.com/@programmingpassion/best-solution-to-enhance-timer-in-swiftui-501096572139

import SwiftUI
import Combine

haikieu

var thePixelBuffer : CVPixelBuffer?

let testImage : UIImage = UIImage.init(named: "twdEnds.png")!
self.thePixelBuffer = self.pixelBufferFromImage(image: testImage)




func pixelBufferFromImage(image: UIImage) -> CVPixelBuffer {
        

haikieu

func search(pattern: String, input text: String) -> [NSTextCheckingResult] {
  
  guard let regex = try? NSRegularExpression.init(pattern: pattern, options: .caseInsensitive) else {
    return []
  }
  
  return regex.matches(in: text, options: [], range: NSRange.init(location: 0, length: text.count))
}

func searchStrings(pattern: String, input text: String) -> [String] {

haikieu

extension UIImage {
    
    func resize(size: CGSize) -> UIImage? {
        
        guard let cgImage = self.cgImage else { return nil}
        
        var format = vImage_CGImageFormat(bitsPerComponent: 8, bitsPerPixel: 32, colorSpace: nil,
                                          bitmapInfo: CGBitmapInfo(rawValue: CGImageAlphaInfo.first.rawValue),
                                          version: 0, decode: nil, renderingIntent: CGColorRenderingIntent.defaultIntent)
        var sourceBuffer = vImage_Buffer()

haikieu

import UIKit

class Student {
  
  var name: String
  
  var age: Int
  
  init(_ name: String, age: Int) {
    print("Hello student \(name)")

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#/bin/sh
#The script is used to embed Watch App into the mobile app.

#Prepare some directory paths
WATCH_APP_NAME="WatchApp.app" # <--- put your watch app name here
WATCH_APP_DIR="${TARGET_BUILD_DIR}/${WATCH_APP_NAME}"
APP_BUILD_DIR="${CODESIGNING_FOLDER_PATH}"
DESTINATION_DIR="${APP_BUILD_DIR}/Watch"

#By checking this condition, the script is valid for Debug configuration only

haikieu

func authenticateUser(_ username: String?, with password: String?) -> Bool {
  guard let username = username, let password = password else {
    //Bad input, do something and return
    ...
    return false
  }
  
  //Golden path, everything goes well so far
  let found = lookupDatabase(username, password)
  return found

haikieu

func authenticateUser(_ username: String?, with password: String?) -> Bool {
  if let username = username, let password = password {
    //Validate usernane and password
    ...
    return true //Assuming, the username and password are valid
  } else {
    //Base input, do something
    return false
  }
}

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var optionalString : String?

guard let theString = optionalString else {
  return
}

//do something with theString

haikieu

extension UIImage {
    ///UIImage instance somtimes can be at any various orientation, so this method basically converts it back to default orientation.
    ///This is picked from the original source -> https://gist.github.com/schickling/b5d86cb070130f80bb40
    func fixedOrientation() -> UIImage? {
        
        guard imageOrientation != UIImageOrientation.up else {
            //This is correct orientation, don't need to do anything
            return self.copy() as? UIImage
        }