The memento pattern is a really-really useful pattern in the context of Angular. In Angular-powered applications, we use and overuse Two-way Data Binding between domain models such as User or Movie.
Let's consider two components: one named Dashboard and the other one named EditMovie. On the Dashboard component, you have a list of movies displayed in the context of our IMDB-like application. The view of such a dashboard could look like this:
<div *ngFor="let movie of model.movies">
<p>{{movie.title}}</p>
<p>{{movie.year}}</p>
</div>
This simple view owns a ngFor directive that iterates over the list of movies contained in a model. Then, for each movie, it displays two p elements containing the title and the release year, respectively.
Now, the EditMovie components access one of the movies in the model...
