Rust Programming Cookbook

How to do it...

In just a few steps, we are unsafe:

1. Create a new library project using cargo new unsafe-ways --lib. Open the project using Visual Studio Code or another editor.
2. Open src/libr.rs to add the following function before the test module:

#![allow(dead_code)]use std::slice;fn split_into_equal_parts<T>(slice: &mut [T], parts: usize) -> Vec<&mut [T]> {    let len = slice.len();    assert!(parts <= len);    let step = len / parts;    unsafe {        let ptr = slice.as_mut_ptr();        (0..step + 1)            .map(|i| {                let offset = (i * step) as isize;                let a = ptr.offset(offset);                slice::from_raw_parts_mut(a, step)            })            .collect()    }}

3. With that ready, we now have to add some tests inside mod tests {}:

#[cfg(test)]mod tests {    use super::*;    #[test] fn test_split_into_equal_parts() ...