Importing the same library in all files

help
1

I have multiple files in my project and in each one I need to import a log like this:
use log::{debug, error, info, trace, warn}; because I want to use log4rs. I have all this files linked to main with mod file_name and in this file I also initialize log4rs. Is there other way I can import it to all files because it will be a pain if I will need to change this import in every file ?

2

Try use crate::log::*;? Or #[prelude_import] use log::*; on nightly.

3

Try #[macro_use] extern crate log; in the root mod (i.e. src/lib.rs), and you can use all the macros from log after that line (even in sub mod).

example

#[macro_use]
extern crate log;

fn main() {
    error!("");
}

mod m {
    fn f() {
        info!(""); debug!("");
    }
}
1 Like
4

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