Rust Programming Master Class from Beginner to Expert - Hash Maps

This tutorial covers the concept of hash maps, their analogy to dictionaries, and their implementation in Rust. It explains how to create, add, access, and update values in a hash map. The tutorial also demonstrates checking for key existence and iterating over hash map entries. An example of using hash maps for frequency counting is provided, illustrating practical applications. The tutorial concludes with a discussion on the use of hash maps in advanced topics.

How can you iterate through all key-value pairs in a hash map?

What happens when you try to update the value at a specific key in a hash map?

Explain the difference between the 'insert' function and the 'entry' function in hash maps.

What is a practical example of using hash maps in programming?