Reactive Contexts

In this video, we delve into the concept of Reactive Contexts in Angular and their crucial role in making Signals reactive. You'll learn:
🚦 What a Reactive Context is and why it is essential for Signals.
🚦 How the effect function creates a Reactive Context.
🚦 How a Reactive Context functions within an Angular template.
🚦 The slight differences between the effect function and template Reactive Contexts.
🚦 Why effect might get triggered more frequently than templates and why this behavior is not problematic.
The repository is available at github.com/rainerhahnekamp/re....
There is also a much more detailed video on Signals, which you can find at • Signals Unleashed: The... .
0:00 Introduction
1:38 Reactive Context via Template
5:19 Reactive Context via effect()
6:14 Different Behavior
8:18 "Does it matter?"
11:45 Farewell

[@dhavalv]

Thank you Rainer for this video. I always make sure to listen to all of your videos, always learn something not documented

[@RainerHahnekamp]

Thanks Dhaval, and also for your ongoing support. You are a well-known face to me 👍

[@MohamedAbdulRaouf]

Super as always, thank you Rainer form Egypt 🙌

[@RainerHahnekamp]

Thanks a lot Mohamed and best wishes from to Vienna (🇦🇹) to the land of the pyramides (🇪🇬) 👍

[@rolandjost3823]

Thank you Rainer

[@RainerHahnekamp]

As always, you are very welcome Roland!

[@aianam5354]

Thank you Rainer ❤ very helpful

[@RainerHahnekamp]

Thanks Aiana and you are very welcome 🙏

[@lindermannla]

Wowww, excelent tutorial! Thnxz!

[@RainerHahnekamp]

Happy to heaar Leonardo

[@koempf]

great Video :-) thanks Rainer ! top

[@RainerHahnekamp]

Most appreciated Steffen!

[@marcwinner567]

Thanks for the vid! Learned something new 🎉

[@RainerHahnekamp]

Great, I stumbled upon the different behavior in a workshop and thought it might be useful to share.

[@ShiftedBit]

That's an important issue you are showing here. Thank you for that. I think i will stick with rxjs on the data layer and use signals in components only. I may try out a signal store for state management. Currently I am quite happy with rxAngular StateManagement and event driven reactivity.

[@RainerHahnekamp]

Serwas Markus, yeah so using Signals in the templates is definitely a safe bet. I don't think that we have to use RxJs all the time. There are quite a lot of applications out there who might be well off with relying only on Promises but you need to know when Promises aren't sufficient anymore and you need to level up. I intend to come up with a video on that topic. It is not easy one. Although I have very good connections to the RxAngular team, I still haven't tried it out. Shame on me 😅

[@ShiftedBit]

@@RainerHahnekamp I know it sounds odd, but do you think it would make a difference to wrap the promise into an observable and embed it to the computed with toSignal()?

[@RainerHahnekamp]

@@ShiftedBit I don't know, you could try it out if you want to. I've added the link to the repository. But as I said in the video, it must not concern you that you might miss the intermediate change where the holidays are emptied. If it does, that don't use a Signal for the holidays but an Observable. "The problem" is not the Promise, but the Signal itself which skips some values (glitch-free).

[@marcwinner567]

@@RainerHahnekamplooking forward to that video sir 🎉