rustHow to create a slice from the end in Rust?

A slice in Rust is a data structure that allows you to reference a contiguous sequence of elements in a collection. To create a slice from the end of a collection, you can use the .split_off() method. This method takes an index as an argument and returns a tuple containing two slices. The first slice contains elements up to the index, and the second slice contains elements from the index to the end of the collection.

Example code

let mut v = vec![1, 2, 3, 4, 5];
let (first, second) = v.split_off(3);

println!("First slice: {:?}", first);
println!("Second slice: {:?}", second);

Output example

First slice: [1, 2, 3]
Second slice: [4, 5]

Code explanation

• let mut v = vec![1, 2, 3, 4, 5];: creates a mutable vector with elements 1, 2, 3, 4, 5
• let (first, second) = v.split_off(3);: calls the split_off() method on the vector v with the index 3 as an argument, and assigns the returned tuple to the variables first and second
• println!("First slice: {:?}", first);: prints the contents of the first slice
• println!("Second slice: {:?}", second);: prints the contents of the second slice

Helpful links

• Rust Documentation - Vec::split_off()

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