如何在除 main.rs 之外的另一个文件中使用模块

Question

I have 3 files in my src folder: 'main.rs', 'network.rs', and 'nodes.rs'. I would like to use a function I declared in nodes.rs in network.rs. I cannot seem to find a way to do this. All I can find online are ways to access the functions within main.rs.

main.rs:

mod network;
mod nodes;

fn main() {
    network::run();
}

network.rs

pub fn run() {
    newnode();
}

nodes.rs

pub fn newnode() {
    println!("Test");
}

Answer 1

If you don't want to call the functions with the full path, you need to explicitly refer to them in the appropriate module with use .

At the beginning of network.rs : use super::nodes::newnode; .

Answer 2

To access the nodes modules, you need to navigate back to main.rs and then descend to the submodule. You can do that by either starting from the root of the crate ( main.rs in this example) with the crate keyword (so crate::nodes::newnode ), or, because main.rs is the parent module of network , accessing it via super : super::nodes::newnode .