Dependency Injection in Angular - Advanced

[chihab]

Format

Long (=~ 20mn)

Description

If you have ever contributed to building an Angular application, you probably already know about Dependency injection. It is one of the features that differentiates Angular from other frameworks and libraries. The overall concept is simple; we define a simple ES2015/TS class and ask for it instances by specifying them as parameters of service or component constructors. Angular's DI mechanism will then provide them at runtime.

In this talk we will discuss some more advanced topics like:

• Dependency Injection tree
• Overwriting a Service in component Tree
• Value and Factory Provider
• Using an Abstract Class as a DI Token
• Controlling the lookup with @Host @SkipSelf and @Optional.
• Avoid Multiple Service Instances in Lazy Loaded Modules

Slides : https://slides.com/chihab/ngmorocco-dependency-injection/fullscreen Source code : https://github.com/chihab/ngx-library-di

[mouadennaciri]

Bonne idée

[ouadie-lahdioui]

Well done.

Thank you @chihab