NG-NL 2016: Pascal Precht - Angular 2 Change Detection Explained

During NG-NL Pascal Precht gave a talk about Change Detection in Angular 2

[y.]

finally a better explanation than all those pay me to view course sites with mostly bad trainers

[ThomasBurleson]

Really liked Pascal's presentation and video. Change detection is so cool... And the component-level, manual toggling on/off of change detection is so VERY cool.
Holy crap - even more important is that I will no longer have requirements to to $apply( ) and $evalAsync( ) and all the other nastiness that we endured in ng 1.

[MrGoginel]

33:40 - it's not a bug I think. It only call the hooks for AfterViewInit and AfterViewChecked for Comp2 because Comp2 is inside Comp1 refreshViews(), so it gets called. Because it is set to OnPush, it's marked so the Change Detection isn't called, it isn't calling refreshViews on it's children (because no input bindings changed), but it calls the Lifecycle hooks and

[camedar]

It is a great presentation, everything is very interesting and quite well explained!

[mrajcok]

At 20:49, the animation shows breadth-first traversal, but I think the components are checked depth-first.

[mrajcok]

At 38:45, where markForCheck() is called... since only the component state is changing, wouldn't it be more efficient to call this.cd.detectChanges(), and only run change detection on that one component, instead of marking all of the components up the tree and running change detection on all of those?

[laytonmiller]

Great video but my gawd please reduce the volume of the before/after music it's INSANELY LOUD compared to the video itself. Almost blew my ears out.

[nishauttwani]

Excellent Presentation. A lot to learn :)

[cedvdb]

Really interesting talk. I actually needed this thank you

[DavidAlsh]

Would be interested in knowing more about why the side effects error occurs and how to prevent that error

[jojojawjaw]

What is VM, in this context? and where can I read about it

[ShlomiLevi]

Awesome!
Can you share the link for the demo's?

[Smiley]

Is this still relevant with Angular 8?

[chaitanyababar]

In case of skipping the whole component tree in case of immutabele object come with one important prerequisites.


Time:- 31.04

[JacerOmriDass]

a bit off-topic butr where can i find the sound track at the beginning of the video?

[mcpop]

Very interesting talk. Great work.
But its quite distracting to hear you use "basically" all the time...
Cheers

[moonstone]

Almost 2022 and demos are still bugged. Cool presentation though

[Queenbg]

So he spent 45 minutes to explain similar to bubbling and capturing event phases of the DOM?

I do not want to be super-duper critical, but he did not sound very convening as:
1) Demo did not start
2) Demonstrated the bug of the technology
3) Everything that said did not sound very logical form time to time

May be the technology is good, but it does not sounds as it is.