feat(rust, python): Impl any/all for array type

[reswqa]

No description provided.

[reswqa]

In the case of any, this calculation should be avoided.

[reswqa]

IIUC, this TODO means we can slice the Values/Bitmap of BooleanArray directly to avoid iterate over this array in no-null case.

But looks at arrow::compute::boolean::any/all a bit more, It seems to have been optimized for this branch already.

pub fn any(array: &BooleanArray) -> bool {
    if array.is_empty() {
        false
    } else if array.null_count() > 0 {
        array.into_iter().any(|v| v == Some(true))
    } else {
        let vals = array.values();
        vals.unset_bits() != vals.len()
    }
}

If I missed something else, feel free to point it out.

[ritchie46]

Slicing an Arrow Array involves Boxing so this is rather expensive (compared to slicing a slice, which is free). If we don't have nulls. We can keep the &[u8] and use the offset + slice_offset + slice_len to do a bitcount and determine the all, any operation.

This is something we can leave as todo, and maybe do in another PR.

[reswqa]

Thanks for the detailed explanation, make sense! Will find the time to do this optimization. :)