apple-avadhesh

- (NSImage *)imageWithColorOverlay:(NSColor *)color {
    
    CGFloat scale = [self recommendedLayerContentsScale:[[NSScreen mainScreen] backingScaleFactor]];
    
    NSImage * overlayedImage = [[NSImage alloc] initWithSize:self.size];
    [self.representations enumerateObjectsUsingBlock:^(NSImageRep * imageRep, NSUInteger idx, BOOL *stop){
        
        CGFloat imageWidth = imageRep.pixelsWide ?: imageRep.size.width * scale;
        CGFloat imageHeight = imageRep.pixelsHigh ?: imageRep.size.height * scale;
        NSRect imageRect = NSMakeRect(0, 0, imageWidth, imageHeight);

apple-avadhesh

Swift

Contents:

• Setup
• Playground
  • Constants, Variables, and Optionals
  • Interpolation
  • Datatypes
  • Conditionals

apple-avadhesh

import UIKit

enum MensSize {
    case S
    case M
    case L
    case XL
}

var size = MensSize.M

apple-avadhesh

import UIKit
import LocalAuthentication

func requestFingerprintAuthentication() {
    let context = LAContext()
    var authError: NSError?
    let authenticationReason: String = "To display a message to the user"
    
    if context.canEvaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics, error: &authError) {
        context.evaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics, localizedReason: authenticationReason, reply: {

apple-avadhesh

extension Data {
    
    public func apnsToken() -> String {
        var token: String = ""
        
        for i in 0 ..< self.count {
            token += String(format: "%02.2hhx", self[i] as CVarArg)
        }
        
        return token

apple-avadhesh

class CustomNavigationController: UINavigationController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        let appearance = UIBarButtonItem.appearance()
        appearance.setBackButtonTitlePositionAdjustment(UIOffset.init(horizontal: -1000, vertical: 0), for: .default)
        self.navigationBar.isTranslucent = true
        self.navigationBar.barTintColor = UIColor.black
        #if swift(>=4.0)
        self.navigationBar.titleTextAttributes = [NSAttributedString.Key.foregroundColor : UIColor.white, NSAttributedString.Key.font: UIFont.systemFont(ofSize: 16.0)]

apple-avadhesh

extension String {
    func isValidEmail() -> Bool {
        let regex = try? NSRegularExpression(pattern: "^(((([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|((\\x22)((((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(([\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(\\([\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(\\x22)))@((([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])([a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(([a-zA-Z

apple-avadhesh

class ViewController: UIViewController {
    
    var sampleImageURLs = ["https://yesofcorsa.com/wp-content/uploads/2016/12/4K-Black-Wallpaper-UHD.jpg","https://images.unsplash.com/photo-1551509134-2f9d4ec80a9b?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjI0MX0&auto=format&fit=crop&w=1650&q=80","https://i.picsum.photos/id/885/200/300.jpg?grayscale"]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        checkDispatchGroup()
        checkDispatchSemaphor()
    }

apple-avadhesh

@main
struct SwiftUIAppLifeCycle: App {
  @Environment(\.scenePhase) var scenePhase
  
  var body: some Scene {
    WindowGroup {
      ContentView()
    }
    .onChange(of: scenePhase) { newScenePhase in
      switch newScenePhase {

apple-avadhesh

import SwiftUI

struct ContentView: View {
    
    @State private var logoImage: UIImage?

    var body: some View {
        
        Image(uiImage: logoImage ?? UIImage())
            .resizable()