Dependency injection in Angular | Services & Dependency Injection
In the last lecture we learned that creating an instance of a service by our own is not a good practice. Instead we can ask angular to inject an instance of a service in the component where we want to use it. This is called as dependency injection.
Dependency injection is a concept where another source injects a dependency of a class to that class, making the class loosely coupled with dependent class.
Let's leran with an example, how we cen inject a dependency to a component in this lecture.
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Very easy to understand from your explanation. Thank you.
U made it pretty easy to understand DI concept. Thanks!
auf Deutsch sagt man "Kurz und Knackig"! Well explained, Thank You!
amazing tutorial, way better than the official google's tutorial
the explanation was clear and understood, good job!
perfect class!! for services!!
friend u r a genius i love you
Great
sir why did you use accessspecifier as private for instantiation variable..??
@fermisurface2616
Жыл бұрын
That's a Typescript shortcut that saves you from doing something like private service: Service; constructor(service: MyService){ this.service = service; }
Hello sir, Actually I been little bit confused. you have given the service file inside provider, then why youre importing the service file again using import keyword. Then i didnt understand the purpose of providers. can somebody help me,if u know the concept?
@fermisurface2616
Жыл бұрын
You have to import the service in the component file so the compiler knows what that class keyword means (otherwise it would say that the class isn't defined). Injecting gives you an actual instance of that class to use. They are two different concepts.
No more capitalized function names 😞