Compilare: warning: unused import: `mem::*` --> main.rs:4:45 | 4 | collections::*, fmt::*, fs::{write, *}, mem::*, str::* | ^^^^^^ | = note: `#[warn(unused_imports)]` on by default warning: function `split_in_x_var` is never used --> main.rs:7:4 | 7 | fn split_in_x_var<T: FromStr>(string: &str) -> Vec<T> where T::Err: Debug { | ^^^^^^^^^^^^^^ | = note: `#[warn(dead_code)]` on by default warning: 2 warnings emitted