rustHow to get all elements of a Rust slice except the last one?

To get all elements of a Rust slice except the last one, you can use the .split_last() method. This method returns a tuple of two slices, the first one containing all elements except the last one, and the second one containing the last element.

let v = [1, 2, 3, 4, 5];
let (first, last) = v.split_last().unwrap();

println!("First slice: {:?}", first);
println!("Last element: {:?}", last);

Output example

First slice: [1, 2, 3, 4]
Last element: [5]

Code explanation

• let v = [1, 2, 3, 4, 5];: This line creates a slice v containing the elements 1, 2, 3, 4, and 5.
• let (first, last) = v.split_last().unwrap();: This line uses the .split_last() method to split the slice v into two slices, first and last. first contains all elements except the last one, and last contains the last element.
• println!("First slice: {:?}", first);: This line prints the contents of the first slice.
• println!("Last element: {:?}", last);: This line prints the contents of the last slice.

Helpful links

• Rust Documentation - Slice methods

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