Function prepend_validity

nodedb-columnar/src/writer/encode.rs:43–49

Prepend a validity bitmap to compressed data.

(valid: &[bool], compressed: &[u8])

/// Prepend a validity bitmap to compressed data.
pub(super) fn prepend_validity(valid: &[bool], compressed: &[u8]) -> Vec<u8> {
    let bitmap = encode_validity_bitmap(valid);
    let mut result = Vec::with_capacity(bitmap.len() + compressed.len());
    result.extend_from_slice(&bitmap);
    result.extend_from_slice(compressed);
    result
}

/// Compute a simple schema hash for the footer.
pub(super) fn compute_schema_hash(schema: &ColumnarSchema) -> u64 {