Chapter 2: Avoiding confusion with rand version

[luskbyte]

Hello all! Thanks for this great work. I'm learning rust and this book is making things more fun and easier.

While reading chapter 2, in the guessing game example, we hace a section Updating a Crate to Get a New Version. In this section the version of rand is set for 0.9.0. The problem is that bellow this section, in the section Generating a Random Number, we'll build the guessing game code with rand 0.8.6 without specify this downgrade. The beginner reader will have problems, because in the updated 0.9.0 version the method thread_rng is deprecated.

Sugested fix:

• In the section Generating a Random Number we can specify the used rand version 0.8.6.

[apollo7321]

I ran into the same issue.

Another approach could be to update to the latest version and use rand::random_range(1..=100); instead, which reads easier too.

[santtiagogp]

Came here for the same thing, thankfully errors are very easy to read, but updating that part to rand::rng().random_range(1..=100); would definetly be helpful for beginners