fn count_spaces(text: Vec<u8>) -> usize {
    text.split(|c| c == 32u8).count()
}

fn count_spaces(text: Vec<u8>) -> usize {
    text.split(|&c| c == 32u8).count()
}

fn count_spaces(text: Vec<u8>) -> usize {
    text.split(|c| *c == 32u8).count()
}