Is there a more idiomatic way to initialize an arr

问题:

Is there an idiomatic way of initialising arrays in Rust. I'm creating an array of random numbers and was wondering if there is a more idiomatic way then just doing a for loop. My current code works fine, but seems more like C than proper Rust:

let mut my_array: [u64; 8] = [0; 8];
for i in 0..my_array.len() {
    my_array[i] = some_function();
}

回答1:

Various sized arrays can be directly randomly generated:

use rand; // 0.6.5

fn main() {
    let my_array: [u64; 8] = rand::random();
    println!("{:?}", my_array);
}

Currently, this only works for arrays of size from 0 to 32 (inclusive). Beyond that, you will want to see related questions:

• How can I initialize an array using a function?
• What is the proper way to initialize a fixed length array?