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func validate<T: Codable>(_ validator: @escaping (T) -> Bool) -> (T) -> Bool {
  return { input in
    return validator(input)
  }
}

enum StringValidator: CustomStringConvertible {
    case isNotEmpty
    case lengthIn(ClosedRange<Int>)
    

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function prompt_char {
	if [ $UID -eq 0 ]; then echo "#"; else echo $; fi
}

PROMPT='%(!.%{$fg_bold[red]%}.%{$fg_bold[cyan]%}%n@)%m:%{$fg_bold[green]%}%(!.%~.%1~)%{$fg_bold[yellow]%} $(git_prompt_info)%{$fg_bold[cyan]%}$(prompt_char)%{$reset_color%} '

ZSH_THEME_GIT_PROMPT_PREFIX="("
ZSH_THEME_GIT_PROMPT_SUFFIX=") "

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import Foundation

struct LocationData: Codable {
    var city: String
    var country: String
    var address: String?
}

struct Item: Codable {
    var name: String

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import UIKit

final class SDPresentationManager: NSObject, UIViewControllerTransitioningDelegate {

  func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
    return SDModalPresentationController(presentedViewController: presented, presenting: source)
  }

  func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
    return SDModalTransitionPresentationAnimator()

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func showPushNotification(title: String, details: String) {
  if #available(iOS 10.0, *) {
    let interval = TimeInterval(1)
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: interval, repeats: false)
    let content = UNMutableNotificationContent()
    content.title = title
    content.body = details
    let req = UNNotificationRequest(identifier: "localPushNotification", content: content, trigger: trigger)
    let center = UNUserNotificationCenter.current()
    center.getNotificationSettings(completionHandler: { settings in

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extension View {
    func iff(_ condition: Bool, _ modifier: (Self) -> AnyView) -> AnyView {
        if condition {
            return modifier(self).eraseToAnyView()
        }
        return eraseToAnyView()
    }
    
    func some<Value>(_ optional: Value?, modifier: (Value, Self) -> AnyView) -> some View {
        guard let value = optional else {

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import UIKit

extension UIImage {
  /**
   Resizes the image to width x height and converts it to an RGB CVPixelBuffer.
  */
  public func pixelBuffer(width: Int, height: Int) -> CVPixelBuffer? {
    var maybePixelBuffer: CVPixelBuffer?
    let attrs = [kCVPixelBufferCGImageCompatibilityKey: kCFBooleanTrue,
                 kCVPixelBufferCGBitmapContextCompatibilityKey: kCFBooleanTrue]

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extension NSObjectProtocol where Self: NSObject {
	func observe<Value>(_ keyPath: KeyPath<Self, Value>, onChange: @escaping (Value) -> ()) -> NSKeyValueObservation {
		return observe(keyPath, options: [.initial, .new]) { _, change in
			// TODO: change.newValue should never be `nil`, but when observing an optional property that's set to `nil`, then change.newValue is `nil` instead of `Optional(nil)`. This is the bug report for this: https://bugs.swift.org/browse/SR-6066
			guard let newValue = change.newValue else { return }
			onChange(newValue)
		}
	}

	func bind<Value, Target>(_ sourceKeyPath: KeyPath<Self, Value>, to target: Target, at targetKeyPath: ReferenceWritableKeyPath<Target, Value>) -> NSKeyValueObservation {

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@dynamicMemberLookup
class Person {
  let name: String
  let age: Int
  private let details: [String: String]
  
  init(name: String, age: Int, details: [String: String]) {
    self.name = name
    self.age = age
    self.details = details

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//: # Swift 3: Working with dates
import Foundation

let date = Date()
let myLocale = Locale(identifier: "bg_BG")

//: ### Setting an application-wide `TimeZone`
//: Notice how we use if-let in case the abbreviation is wrong. It will fallback to the default timezone in that case.
if let myTimezone = TimeZone(abbreviation: "EEST") {
    print("\(myTimezone.identifier)")