nrlnishan

// We make our Property Wrapper Generic.
@propertyWrapper
struct Store<T> {

    // This is the key that user can provide
    var key: String
    
    // The default value for the property
    var defaultValue: T
    

nrlnishan

@propertyWrapper
struct Store {

    // Key for UserDefaults
    var key: String
    
    // This is the special variable required in Property Wrapper.
    var wrappedValue: Bool {
        set { UserDefaults.standard.set(newValue, forKey: key) }
        get { UserDefaults.standard.value(forKey: key) as? Bool ?? false }

nrlnishan

struct AppSettings {
    
    // Update the respective value in UserDefault
    static var isDarkModeEnabled = false {
        didSet {
            UserDefaults.standard.setValue(isDarkModeEnabled, forKey: "is_dark_mode_enabled")
        }
    }
}

nrlnishan

class SecondViewController: UIViewController {
    
    var someText = ""
    var controller: UIAlertController!
    
    var label = UILabel()
    
    override func loadView() {
        view = UIView()
        view.backgroundColor = .white

nrlnishan

extension UIView {

        func shake() {

                let animation = CAKeyframeAnimation()
                animation.keyPath = "position.x"
                animation.values = [0, 10, -10, 10, -5, 5, -5, 0 ]
                animation.keyTimes = [0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875, 1]
                animation.duration = 0.4
                animation.isAdditive = true

nrlnishan

// DRAFT:- 

1. Give scrollview with top, leading, trailing & bottom constraint
2. Give the container view inside scrollview with 
 - Center x to scrollview 
 - Center y to scrollview 
 - trailing to scrollview 
 - bottom to scrollview 
 - Equal Height to scrollview 
 - Equal Width to scrollview 

nrlnishan

1. Content Hugging Property:
  - This priority defines whether the content size should increase beyond its intrinsic size. 
  - Content Hugging :: Content doesnot want to grow. 
  
  Horizontal Hugging: Higher priority means that content width doesnot want to grow beyond its intrinsic width. 
  Vertical Hugging: Higher priority means that content height doesnot want to grow beyond its intrinsic height. 
  
2. Content Compression Resistance 
  - This priority defines whether the content size should decrease beyond its intrinsic size. 
  - Content Compression Resistance :: Content doesnot want to shrink 

nrlnishan

1. Duplicate Build Configurations from Project Settings
  - Example: Duplicate debug & name it as debugDev. Duplicate release & name it as releaseDev.

2. Change Project's bundle identifier from Target Build Settings
  - Change it to reflect build configurations
  
3. Create User Defined Settings 
  - There is + sign on navigation bar in Build Settings. Click on it & create User Defined Settings as needed
  - Example: If you need different names on different builds, add setting name APP_DISPLAY_NAME & so on.
  - You need to use this created settings on info.plist file. Eg, Change Bundle Display Name value to $(APP_DISPLAY_NAME).

nrlnishan

Steps for creating custom UIView.

1. Create a xib file, eg: MyCustomView.xib
2. Do necessary layout in xib file 
3. Create a UIView file. eg: MyCustomView.swift. 
4. Set this MyCustomView.swift file as the file owner of that xib
5. Create necessary outlets from the .xib file to .swift file. Important: Create one outlet for the root parent UIView to .swift file. 
Name this outlet as as containerView
6. Override both the init method i.e using decoder & frame
7. Set the code as follows

nrlnishan

    class func from(r:CGFloat,g:CGFloat,b:CGFloat,a:CGFloat) -> UIColor {
        return UIColor(red: r/255.0, green: g/255.0, blue: b/255.0, alpha: a)
    }
   
    // Hex should be in format #bcbcbc
    class func from (hex:String) -> UIColor {
        var cString:String = hex.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()
        
        if (cString.hasPrefix("#")) {