July 2017
Intermediate to advanced
454 pages
10h 1m
English
Content preview from Expert Angular
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Generating services
Services are user-defined classes to solve some purposes. Angular recommends having only template-specific codes in components. A component's responsibility is to enrich the UI/UX in an Angular application and it delegates business logic to services. Components are the consumers of services.
We have the component in place that helps render the Booklist template. Now, let's run a CLI command to generate a service to serve the list of books. Execute the following command to generate booklist.services.ts and booklist.services.spec.ts:
The code snippet of the generated booklist.service.ts is shown here:
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.