defining array in rust code example

Example 1: how to make an array in rust

//Array declaration. Array sizes must be known at compile time
let my_array: [i32; 5] = [1, 2, 3, 4, 5];

//If the size of the array is not known at compile time. Use a slice or a vector

Example 2: initializing array rust

let _: [u8; 3] = [1, 2, 3];
let _: [&str; 3] = ["1", "2", "3"];

let _: [String; 3] = [
    String::from("1"),
    String::from("2"),
    String::from("3")
];

let mut rng = rand::thread_rng();
let _: [u8; 3] = [rng.gen(), rng.gen(), rng.gen()];