Function count_substring

crates/vm/src/bytes_inner.rs:987–994

(haystack: &[u8], needle: &[u8], max_count: Option<usize>)

#[inline]
fn count_substring(haystack: &[u8], needle: &[u8], max_count: Option<usize>) -> usize {
    let substrings = haystack.find_iter(needle);
    if let Some(max_count) = max_count {
        core::cmp::min(substrings.take(max_count).count(), max_count)
    } else {
        substrings.count()
    }
}

pub trait ByteOr: ToPrimitive {
    fn byte_or(&self, vm: &VirtualMachine) -> PyResult<u8> {