fn main() {
let arr: [u8;8] = [97, 112, 112, 108, 101];
println!("Len is {}",arr.len());
println!("Elements are {:?}",arr);
}
error[E0308]: mismatched types
--> src/main.rs:2:23
|
2 | let arr: [u8;8] = [97, 112, 112, 108, 101];
| ------ ^^^^^^^^^^^^^^^^^^^^^^^^ expected an array with a fixed size of 8 elements, found one with 5 elements
| |
| expected due to this
Is there any way to pad the remaining elements with 0's? Something like:
let arr: [u8;8] = [97, 112, 112, 108, 101].something();
In addition to the other answers, you can use const generics to write a dedicated method.
fn pad_zeroes<const A: usize, const B: usize>(arr: [u8; A]) -> [u8; B] {
assert!(B >= A); //just for a nicer error message, adding #[track_caller] to the function may also be desirable
let mut b = [0; B];
b[..A].copy_from_slice(&arr);
b
}