rustHow to borrow as mutable in Rust

Mutable borrowing in Rust is done using the &mut reference type. This type of reference allows you to modify the data that it points to.

Example:

let mut x = 5;
let y = &mut x;

*y += 1;

println!("x = {}", x);

Output example

x = 6

The code above creates a mutable reference y to the variable x. The * operator is used to dereference the reference y and modify the value of x.

Code explanation

• let mut x = 5;: creates a mutable variable x with the value 5
• let y = &mut x;: creates a mutable reference y to the variable x
• *y += 1;: dereferences the reference y and modifies the value of x
• println!("x = {}", x);: prints the value of x

Helpful links

• Rust Reference
• Rust Book

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