What are the different ways to test our code? Well, the first thing is that we have the emulator. The emulator comes with Android Studio in the SDK and is quite sluggish, but it is already installed and ready to use, allowing you to customize and simulate different phones. The second way, we now have this actual physical device. The devices are incredibly accurate. I mean you run the code on a physical phone. The problem here is that since Android runs on so many different types, it can get quite expensive, especially if you want to test on 100 devices. Your third option is to try something called Genymotion. Genymotion is my favorite because not only does it emulate a phone, it actually turns your computer into a very powerful phone, so it’s incredibly fast, faster than even on a device. It’s also like an emulator, very cheap. You can simply browse and simulate as many different devices as you like. Test things without having to buy brand-new hardware, so pros usually use what they like best. I tend to find that when I have a bug in a very specific device I’m testing on the device, but at this point, I’m not using an emulator at all, so why Genymotion? Well, for starters, instead of configuring the emulator for the connection, you have the opportunity to simply download various ready-made devices, many of which are already common. You can customize them too, but it’s a lot easier to download exactly what you want rather than having to configure it yourself. Once you have a phone up and running, you’ll see the screen. Now you can simulate so many different things apart from being able to play with the charge level. And whether it’s loading or unloading, the GPS is fantastic, you can just walk to a map. And you can type, you know a specific place, it will find it, and then it will have the latitude and longitude. You can change the precision. For all the things you might want to test your device externally you can just play with the settings directly. Besides, you can also connect the camera to your webcam on your laptop, which is helpful. When trying to troubleshoot camera apps, it’s much easier to quickly scan through that experience than wait for it to be available on the device and then move it to where you want to watch. So if you’re just starting, use the emulator or device if you have one or just having configuration issues.

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I will tell you which version of Angular to choose. Since the release of Angular 2, the Angular framework has been completely rewritten, so there will be a syntax change when moving from Angular 1 to 2. So, unfortunately, if you know anything about AngularJS, you have to forget everything and move on. You might be wondering what is Angular 4 or Angular 5 or even the future versions 6, 7, or 8. Don’t worry about these upcoming versions. Yes, they are just improvements to existing Angular 2. So moving from Angular 2 to 4 or even 5 is not a syntax change. Just improvements or bug fixes for existing Angular 2 and technically we shouldn’t be referring to Angular 2 or Angular 5. We just call it Angular. With the release of Angular 5, Angular is much faster, smaller, and has a better compiler. And more importantly, they target Progressive Web Apps that try to make it easier to build Progressive Web Apps. So, if I have to say what is the most significant difference between AngularJS and Angular 2, it has to be speed and web components. Even Google has mentioned that the future of the web is in web components. And in Angular 2, data flows in one direction only. Yes, there are ways to return a child data to the parents, but Angular 2 is way better than Angular JS.

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Before learning anything about technology, we always have a question in mind. Why should I know about this course? Let’s understand why you should learn Angular. Angular is a front-end framework. As it is a front-end framework, the concept of HTML and CSS is very important. The Angular framework fully supports HTML 5. This framework can work with cascading CSS style sheets. Besides CSS, we can also use SCSS or SAS. These are style frameworks that we can use in any web application and Angular supports them all. You can choose any to work with on your stylesheet. So why angular? With the help of Angular, we can develop Progressive Web Applications. If your app is a progressive web app, that means you can install your app as a separate app and it will work like a native app. You can also install it on your phone. You don’t need to download your app from the play store, you can just use the browser and it works like the app. PWD allows us to work in offline mode through online mode and it works great on desktop and mobile. By using Angular, we can develop native mobile apps. Angular does not directly support mobile app development but with the help of some frameworks like Ionic, we can develop native mobile apps, and internally we will use Angular. Similarly, we can also develop desktop applications using Angular, and again, Angular does not directly support this concept. But yes, with the help of other frameworks we can create desktop applications. Angular is super fast. You can deploy Angular code to any server. It does not depend on a single server. You can deploy it on an Apache server, Linux server, or any other server. Users are the most important asset of any web application and the user experience is the best on the angle. Angular is the best way to work on front lines and applications. Now let’s talk about who should learn Angular and I would say that you should know something about Angular regardless of your experience. Whether you are a more experienced or more experienced person, you need to know about angular because angular is a comprehensive framework.

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