pub fn _df_rows_to_hashes_threaded_vertical(
keys: &[DataFrame],
build_hasher: Option<PlSeedableRandomStateQuality>,
) -> PolarsResult<(Vec<UInt64Chunked>, PlSeedableRandomStateQuality)>pub fn _df_rows_to_hashes_threaded_vertical(
keys: &[DataFrame],
build_hasher: Option<PlSeedableRandomStateQuality>,
) -> PolarsResult<(Vec<UInt64Chunked>, PlSeedableRandomStateQuality)>