How to Use Glob Imports (use module

:*) in Rust (and Why to Avoid Them)

Modules
2026-04-17T12:05:42+00:00
Use explicit imports like `use module::item;` instead of `use module::*;` to prevent naming conflicts and improve code clarity.

Use use module::name; to import specific items instead of use module::*; to avoid namespace pollution and ambiguous name errors.

use std::collections::HashMap;

fn main() {
    let mut map = HashMap::new();
    map.insert("key", "value");
}

Glob imports bring every public item from a module into scope, which often causes conflicts when multiple modules define items with the same name. Explicit imports make your code's dependencies clear and prevent the compiler from failing to resolve which item you mean.