January 2023
Intermediate to advanced
930 pages
21h 7m
German
Content preview from Angular, 4th Edition
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24Guards: Routen absichern
»Functional router guards are a lightweight, ergonomicand composable way to control access to your routes.«
Andrew Scott(Mitglied des Angular-Teams)
Normalerweise kann jede Route der Anwendung uneingeschränkt betreten und wieder verlassen werden. In komplexeren Anwendungen kann es allerdings Bereiche geben, die nur unter bestimmten Umständen aufgerufen werden sollen, z. B. abhängig von Authentifizierung, Berechtigungen oder Zustand der Anwendung.
Wollen wir diese Anwendungsfälle mit den uns bisher bekannten Mitteln lösen, müssen wir in allen beteiligten Komponenten prüfen, ob sie aufgerufen oder verlassen werden, und entsprechend darauf reagieren. Bei vielen Komponenten mit gleichen Bedingungen wird das schnell mühselig ...
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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.
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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.