Method primary_lookup

perro_source/core/perro_csv/src/lib.rs:225–234

(&self)

                        .first()
                        .is_some_and(|cell| cell.hash == key_hash && cell.text == key)
                })
            })
    }

    /// Returns the first row whose cell in `col` has `key_hash`.
    ///
    /// Hash-only lookups cannot distinguish collisions. Use [`Self::find`] when the original
    /// key text is available.
    pub fn find_hash(&self, col: usize, key_hash: u64) -> Option<&'static CsvRow> {
        if col == 0 && !self.primary_index.is_empty() {
            return self.find_primary_hash(key_hash);
        }
        self.rows