providerswas also briefly touched upon.
providershave been used with Angular's
@NgModulemeta in an array.
providershave also all been class identifiers. Angular lets programmers specify providers with a more verbose "recipe". This is done with by providing Angular an Object literal (
provides a class, but it does so with Angular's longer format.
ChatWidgetimplementations, for example to allow for a
MockChatWidget, they could do this easily:
MockChatWidget, and will sort all of that out.
useFactoryare two other examples of
provider"recipes" that Angular can use. For example:
providefunction and in the consumer. This is because as a factory we have no
Randomidentifier anywhere to access.
useFactoryrecipe. When Angular is told to
useFactory, Angular expects the provided value to be a function. Sometimes functions and classes are even more than what's needed. Angular has a "recipe" called
useValuefor these cases that works almost exactly the same:
Math.randomis assigned to the
useValueproperty passed to the