| // MARK: - Protocol definitions | |
| protocol InputProtocol { | |
| var a: Int { get } | |
| var b: Int { get } | |
| } | |
| protocol Addition: InputProtocol {} | |
| extension Addition { | |
| func operation() -> Int{ | |
| return a + b |
| declare -a arr=("MyClass1.swift" "MyClass2.swift" "MyClass3.swift") | |
| ## now loop through the above array | |
| for i in "${arr[@]}" | |
| do | |
| echo "$i" | |
| find /Users/richie/myapp-ios -name "$i" -exec cp '{}' /Users/richie/Desktop/${i} \; | |
| done |
PUT YOUR DATABASE IN THE SHARED CONTAINER This method simply returns the URL of the Documents directory in the App bundle.
lazy var applicationDocumentsDirectory: NSURL = {
let urls = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
return urls[urls.count-1] as NSURL
}()
| private func setup() { | |
| self.addTarget(self, action: #selector(beginEditing), for: UIControl.Event.editingDidBegin) | |
| self.addTarget(self, action: #selector(textDidChange), for: UIControl.Event.editingChanged) | |
| self.addTarget(self, action: #selector(textEndEditing), for: UIControl.Event.editingDidEnd) | |
| } | |
| @objc func beginEditing() { | |
| print(#function) | |
| } | |
| protocol Observer { | |
| func update() | |
| } | |
| class ConcreteObserver: Observer { | |
| var id: String | |
| init(id: String) { | |
| self.id = id | |
| } | |
| func update() { |
| import UIKit | |
| // Creamos un Protocolo | |
| protocol Beverage { | |
| func brewed() -> Self | |
| } | |
| //Creamos una funcion Generic donde el tipo T conforma al Protocolo | |
| func serve<T>(_ drink: T) -> T where T: Beverage { | |
| print("Se ejecuto metodo del generic \(drink.self)") |
| import UIKit | |
| /* | |
| What: | |
| A protocol that defines the action we want to encapsulate. | |
| Who: | |
| An object who contains an object who conforms the strategy. | |
| How: |
| // | |
| /* | |
| In iOS, Apple provides two ways to do multitasking: | |
| The Grand Central Dispatch (GCD) and NSOperationQueue frameworks. | |
| Both of them work perfectly when it’s time to assign tasks to different threads, or different queues other than the main one. | |
| Which one should be use is a subjective matter, but in this tutorial we’ll focus on the first one, the GCD. | |
| *No matter what,there’s one rule that should be always respected: | |
| The main thread must be always remain free so it serves the user interface and user interactions. |