Redundant use statement?

[Grimmscorpp]

Hello, fellow Rustaceans!

I'm new to Rust and reading this nice book on it. I'm currently on chapter 14. In Listing 14-07, it asks me to add a use line to be able to refer to the add_one crate.

use add_one;

fn main() {
    let num = 10;
    println!("Hello, world! {num} plus one is {}!", add_one::add_one(num));
}

However, even if I omit the use statement at the top, the program still compiles (and I tried it based on my current understanding of how the use statement should work).

// use add_one;
// --snip--

Any thoughts? Thanks!

[chriskrycho]

You’re correct; it is extraneous! A long time ago, before the Rust 2018 Edition, it was not, so it likely got missed in cleaning up things from that transition! If you’d like to open a pole request to fix it, that would be very welcome! If not, I will try to get to it sometime this week.

[Grimmscorpp]

@chriskrycho thanks for the clarification! I’ll open a PR this week.

[Grimmscorpp]

@chriskrycho the PR is up for review 🤞

[Grimmscorpp]

Closing the issue as the associated PR was merged. Thanks!

[chriskrycho]

Thank you!