When working with NgRx and typescript, I often come across this syntax within class constructors:
import { Store, select } from '@ngrx/store'
class MyClass {
constructor(private store: Store<AppState>) {
this.count$ = store.pipe(select('users'));
}
}
Can someone explain the purpose of the angle bracket syntax in Store<AppState>?
This serves as a demonstration of a Generic type. One of the most straightforward examples of generics is with arrays. You can create an array of a specific type, like an array of numbers or strings. This can be done using the generics syntax:
const myNumberArray: Array<number> = [1, 2];
const myStringArray: Array<string> = ['one', 'two'];
Another example of generics is seen in stores. A store can hold a collection of items, such as this store which holds AppState.
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