rustHow to remove elements from a Rust slice?

Removing elements from a Rust slice can be done using the .split_off() method. This method takes an index as an argument and returns a new slice containing the elements from the original slice up to the index. The original slice is then modified to contain the elements after the index.

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

println!("v = {:?}", v);
println!("u = {:?}", u);

Output example

v = [4, 5]
u = [1, 2, 3]

The code above creates a vector v with the elements [1, 2, 3, 4, 5] and then calls the .split_off() method on it with the index 3. This returns a new vector u containing the elements [1, 2, 3] and modifies the original vector v to contain the elements [4, 5].

Parts of the code:

• let mut v = vec![1, 2, 3, 4, 5];: creates a vector v with the elements [1, 2, 3, 4, 5]
• let u = v.split_off(3);: calls the .split_off() method on v with the index 3
• println!("v = {:?}", v);: prints the contents of v
• println!("u = {:?}", u);: prints the contents of u

Helpful links

• Rust Documentation - Vec::split_off()

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