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// Asyncronous programming

import Foundation

// # Async-await samples
// ## Instead of using callbacks, ...
func getEmployeesJSON(url: URL, callback: @escaping ([Employee]) -> ())) {
    URLSession.shared.dataTask(with: url), let response, response as? HTTPURLResponse, error == nil else {
    if let let error = error {
        print("Error downloading: \(error)")

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import Foundation
import var CommonCrypto.CC_MD5_DIGEST_LENGTH
import func CommonCrypto.CC_MD5
import typealias CommonCrypto.CC_LONG

extension String {
    func md5() -> String {
        let length = Int(CC_MD5_DIGEST_LENGTH)
        let messageData = data(using: .utf8)!
        var digestData = Data(count: length)

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SHORTCUTS

Key/Command	Description
Tab	Auto-complete files and folder names
Ctrl + A	Go to the beginning of the line you are currently typing on
Ctrl + E	Go to the end of the line you are currently typing on
Ctrl + U	Clear the line before the cursor
Ctrl + K	Clear the line after the cursor
Ctrl + W	Delete the word before the cursor
Ctrl + T	Swap the last two characters before the cursor

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#!/usr/bin/env ruby

begin
  project = ARGV[0]
  server = ARGV[1]

  if project.nil?
    raise "<project> not specified"
  end
  if server.nil?

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//
//  OSDNIValidator.swift
//  OSFramework
//
//  Created by Daniel Vela on 21/09/2016.
//  Copyright © 2016 Daniel Vela. All rights reserved.
//
import Foundation

/**

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// To decode a json where the type to decode is in the json itself like:
// [{ "type": "foo", "payload": { "word": "hello" "push_id": 3711282988, "size": 1, } }, { "type": "bar", "payload": { "size": 1, "radious": 0.5 } }]


struct FooPayload: Codable {
    var word: String
    var push_id: Int
	var size: Int
}

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import UIKit

class BlinkingImage: UIImageView {
  override func awakeFromNib() {
    super.awakeFromNib()
    UIView.animate(withDuration: 1.2,
                   delay: 0.0,
                   options: [.autoreverse, .repeat, .curveEaseInOut],
                   animations: {
                    self.alpha = 0.10

madcato

//
//  Optional.swift
//  UserLogin
//
//  Created by Daniel Vela Angulo on 17/03/2020.
//  Copyright © 2020 TBM. All rights reserved.
//

extension Optional where Wrapped == String {
    var isNilOrEmpty: Bool {

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//
//  Observer.swift
//  TestAspect
//
//  Created by Daniel Vela on 12/01/2020.
//  Copyright © 2020 veladan. All rights reserved.
//

protocol Observer {
  associatedtype Value

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//
//  User.swift
//  TestAspect
//
//  Created by Daniel Vela on 12/01/2020.
//  Copyright © 2020 veladan. All rights reserved.
//

@propertyWrapper
struct Logger<Value> {