Function flatten_mut

pub fn flatten_mut<T, const N: usize>(vals: &mut [[T; N]]) -> &mut [T]

Takes a &mut [[T; N]], and flattens it to a &mut [T].

Panics

This panics if the length of the resulting slice would overflow a usize.

This is only possible when flattening a slice of arrays of zero-sized types, and thus tends to be irrelevant in practice. If size_of::<T>() > 0, this will never panic.

Examples

fn add_5_to_all(slice: &mut [i32]) {
    for i in slice {
        *i += 5;
    }
}

let mut array = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];
add_5_to_all(array_util::flatten_mut(&mut array));
assert_eq!(array, [[6, 7, 8], [9, 10, 11], [12, 13, 14]]);