Function map1 

pub fn map1<A: Copy, U>(
    shape: &[usize],
    a: View<'_, A>,
    out: &mut [U],
    f: impl Fn(A) -> U,
)

Applies f element-wise: out[i] = f(a[i]) in row-major order of shape.

Panics

If out.len() is not the element count of shape, or a view indexes outside its data. Both are caller bugs: nuvec-core validates shapes and layouts beforehand.