rustHow to borrow a variable in Rust

Borrowing a variable in Rust is done using the & operator. This operator creates a reference to the variable, allowing it to be used without taking ownership of it.

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

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

Output example

x = 5
y = 5

The code above creates a mutable variable x and a reference y to it. The & operator creates a reference to x which can be used to access its value without taking ownership of it.

Parts of the code:

• let mut x = 5;: creates a mutable variable x with the value 5
• let y = &x;: creates a reference y to the variable x
• println!("x = {}", x);: prints the value of x
• println!("y = {}", y);: prints the value of y, which is the same as the value of x

Helpful links

• Rust Reference
• Rust Book - References and Borrowing

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