Using Sequence-Like Features of Deque

00:00 Since deques are mutable sequences, they implement almost all the methods and operations that are common to sequences and mutable sequences.

00:09 So far in the course, you’ve learned about some of these methods and operations, such as .insert(), indexing, membership tests, and others. Now, you’ll see a few other examples.

00:20 You can use the plus operator to return a new deque that’s a concatenation of two existing deques. The multiplication operator returns a new deque equivalent to repeating the original deque as many times as you specify.

00:34 So, let’s review the sequence that we originally had, and you can use .index() to get the position of a value in the deque.

00:46 .count() returns the number of times a value appears in the target deque,

00:52 and you can also reverse the elements of the deque in place.

00:58 You can use .clear() to remove all elements from a deque, so now it’s an empty deque. In the next lesson, you’ll explore a practical use case for deque by using it to keep track of a page history.

01:11 See you there.