Русские видео

Сейчас в тренде

Иностранные видео




Если кнопки скачивания не загрузились НАЖМИТЕ ЗДЕСЬ или обновите страницу
Если возникают проблемы со скачиванием, пожалуйста напишите в поддержку по адресу внизу страницы.
Спасибо за использование сервиса savevideohd.ru



NotificationCenter Swift4 tutorial

Have you heard of Observer Pattern in iOS. Today, we will learn Observer Pattern in iOS swift 4 as we are going to learn about NotificationCenter in IOS. NotificationCenter works on Observer Pattern The Observer pattern allows objects to subscribe to other objects known as a Subject. When the Subject is updated, all of the objects who have subscribed to the Subject will be notified about the update. It is used when there is a one to many relationship between objects and is opposite to delegate pattern where we have one to one relationship. Source code: https://goo.gl/AKwf1S

Comments