ole

import UIKit

/// A validation rule for text input.
public enum TextValidationRule {
    /// Any input is valid, including an empty string.
    case noRestriction
    /// The input must not be empty.
    case nonEmpty
    /// The enitre input must match a regular expression. A matching substring is not enough.
    case regularExpression(NSRegularExpression)

sharplet

import Foundation
import PlaygroundSupport

enum URLResult {
  case response(Data, URLResponse)
  case error(Error, Data?, URLResponse?)
}

extension URLSession {
  @discardableResult

SheldonWangRJT

iOS Dynamic vs. Static Library / Framework

Find me on Github, Facebook, Youtube, etc by #iOSBySheldon.

Concept

Library and Framework are not same but close. Frameworks are just libraries with linking (binding). In other words, frameworks are just libraries that are bundled into targets. Therefore, their file extensions are different.

File Format

• Static Library - xxxx.a
• Dynamic Library - xxxx.dylib

saoudrizwan

import UIKit

extension UIView {
    
    // In order to create computed properties for extensions, we need a key to 
    // store and access the stored property
    fileprivate struct AssociatedObjectKeys {
        static var tapGestureRecognizer = "MediaViewerAssociatedObjectKey_mediaViewer"
    }
    

robertpainsi

Commit Message Guidelines

Short (72 chars or less) summary

More detailed explanatory text. Wrap it to 72 characters. The blank
line separating the summary from the body is critical (unless you omit
the body entirely).

Write your commit message in the imperative: "Fix bug" and not "Fixed
bug" or "Fixes bug." This convention matches up with commit messages

jakerockland

//
//  UIAlertController+Action.swift
//

import UIKit

/**
 Extension to `UIAlertController` to allow direct adding of `UIAlertAction` instances
 */
extension UIAlertController {

saoudrizwan

//  .filter() returns a new array of elements that satisfy a predicate declared in our closure
let evenNumbers = [1, 2, 3, 4, 5].filter { $0 % 2 == 0 }

// .map() returns a new array after applying a function to each element
let numbers = [1, 2, 3, 4, 5].map { $0 * 2 }
print(numbers) // [2, 4, 6, 8, 10]

// .flatMap() is like .map(), except it filters out any nil values
let arrayWithNoNils = [1, 2, 3, nil].flatMap { $0 }
print(arrayWithNoNils) // [1, 2, 3]

saoudrizwan

// http://nshipster.com/swift-objc-runtime/
extension UIViewController {
    private struct AssociatedKeys {
        static var DescriptiveName = "nsh_DescriptiveName"
    }

    var descriptiveName: String? {
        get {
            return objc_getAssociatedObject(self, &AssociatedKeys.DescriptiveName) as? String
        }

saoudrizwan

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
        
    let vc = ViewController()
    let window = UIWindow(frame: UIScreen.main.bounds)
    window.rootViewController = vc
    window.makeKeyAndVisible()
    self.window = window
        
    return true

freak4pc

public extension MKMultiPoint {
    var coordinates: [CLLocationCoordinate2D] {
        var coords = [CLLocationCoordinate2D](repeating: kCLLocationCoordinate2DInvalid,
                                              count: pointCount)

        getCoordinates(&coords, range: NSRange(location: 0, length: pointCount))

        return coords
    }
}