If your web form has a dropdown list that includes lots of options, you might want to make your users' lives easier with type-ahead. Fortunately, Angular Material lets you do that pretty easily.
So you've got an array that you need whittled down to a few items or just one matching item? If so, then you'll probably use either find() or filter().
Wanna give users their choice of what kinds of actions they take on a data table row? If so, then consider adding clickable icons to your Angular Material table.