• Apple - Support - Mac 101
  If you're new to computers or simply need a refresher course on how to get the most out of your Mac, you've come to the right place. Welcome to Mac 101: Your guide to using a Mac effectively and efficiently. If you've switched to Mac from Windows, Switch 101 is just for you. Whether you want to learn how to get around your Mac desktop or find out what a desktop is, you'll find the answer here. We'll also show you how to connect your printer and other devices, use email and the Internet, work with the software that came with your Mac, and even what to do when things don't go as planned. 
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• RxJS with Angular 101
  RxJS is a library for reactive programming using Observables, to make it easier to compose asynchronous or callback-based code. Angular and Angular Material implements RxJS out of the box. Other Javascript libraries can use RxJS also but have to install it like a package. Official documentation can be found on RxJS. Since the documentation is quite complicated and as the RxJS library is very large, this article will cover the most important concepts used on daily basis.
  in Development > Angular and Ionic with 101 angular documentation observables rxjs tutorial

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