Advanced DI by Ward Bell

You Don’t Know DI? Go beyond Dependency Injection basics. Learn about the two parallel DI hierarchies and which one wins, what happens when you provide the same token twice … when multi is true, what’s the effect of lazy loading, what’s going on in forRoot and forFeature, what’s in a component’s injector, and how to talk to the components in content children when you don’t know their types. It’ll be fast, code-frontal, fun.

[LarsGyrupBrinkNielsen]

Single-most important lesson from this talk:
The {read:} option gets a value from the child component injector.
Used with @ContentChild, @ContentChildren, @ViewChild, and @ViewChildren.

[sagarrout]

He provides a deep insight in an easily digested form. Thanks Ward Bell!!

[hansschenker]

Ward Bell is an underestimated genius!!

[fetis]

wooooaaaah, this is awesome Ward Bell!

[LarsGyrupBrinkNielsen]

Second-most important lesson from this talk:
A {useClass:} provider creates a second instance of an already-provided class-based service.

[i-heart-google]

Isn't this kinda the same lesson that Alex Rickabaugh already gave in 2017? Take a look at this ... and watch it from 27:48