Function subarray_checked 

pub fn subarray_checked<const S: usize, T>(
    slice: &[T],
    index: usize,
) -> Option<&[T; S]>

Returns a reference to a contiguous subarray of length S starting at index.

Returns None if the requested range exceeds the slice bounds.

This is the bounds-checked variant. For an unchecked version, see subarray_unchecked.

Examples

use ps_util::subarray_checked;
let data = [1, 2, 3, 4, 5];
let chunk: Option<&[i32; 2]> = subarray_checked::<2, i32>(&data, 1);
assert_eq!(chunk, Some(&[2, 3]));

// Out of bounds returns None
assert_eq!(subarray_checked::<2, i32>(&data, 4), None);

Works with vectors:

use ps_util::subarray_checked;
let vec = vec!["a", "b", "c", "d"];
let chunk: Option<&[&str; 3]> = subarray_checked::<3, &str>(&vec, 0);
assert_eq!(chunk, Some(&["a", "b", "c"]));

// Out of bounds returns None
assert_eq!(subarray_checked::<3, &str>(&vec, 2), None);