[Ch08-03: Hash maps] Description of program doesn't match the actual code

[awulkan]

• I have checked the latest main branch to see if this has already been fixed
• I have searched existing issues and pull requests for duplicates

URL to the section(s) of the book with this problem:
https://github.com/rust-lang/book/blob/main/src/ch08-03-hash-maps.md?plain=1#L60
https://github.com/rust-lang/book/blob/main/listings/ch08-common-collections/listing-08-21/src/main.rs

Description of the problem:

I'm new to Rust so maybe I'm misunderstanding something, but the book says this about listing 8-21:

"This program handles the Option by calling unwrap_or to set score to zero if scores doesn't have an entry for the key."

Yet the code listing that it's referring to doesn't use unwrap_or.

Suggested fix:
Either implement what the text says, or remove the text.

[carols10cents]

You're totally right, I messed up! Fixed now, thank you!!!

[awulkan]

Mistakes happen, we're only humans. :)
Thanks for fixing it so quickly!

[kiyov09]

I also noticed this and did a review before opening an issue. I found that the solution was already done but just FYI the live version of the book still shows the old version of the code.

[carols10cents]

The book rides the Rust release trains. The fix is live at https://doc.rust-lang.org/beta/book/ch08-03-hash-maps.html (note the "beta" in the URL) and will be fixed on stable with the next release.