Remove subtract()

src/lib.rs

@@ -846,70 +846,6 @@ impl KmerCountTable {
 
         Ok((total_added, new_keys))
     }
-
-    /// Subtract counts from another KmerCountTable from this one.
-    ///
-    /// # Arguments
-    ///
-    /// * `other` - The KmerCountTable to subtract
-    ///
-    /// # Returns
-    ///
-    /// Returns a PyResult with the number of k-mer counts removed from the table
-    #[pyo3(signature = (other))]
-    pub fn subtract(&mut self, other: &KmerCountTable) -> PyResult<u64> {
-        // Check if ksizes match
-        if self.ksize != other.ksize {
-            return Err(PyValueError::new_err(
-                "KmerCountTables must have the same ksize",
-            ));
-        }
-
-        // Use atomic counter for thread-safe updates
-        let total_counts_removed = AtomicU64::new(0);
-
-        // Create a vector to store updates
-        let updates: Vec<_> = other
-            .counts
-            .par_iter()
-            .filter_map(|(&hash, &count)| {
-                // Only include hashes that exist in self.counts
-                self.counts
-                    .get(&hash)
-                    .map(|&self_count| (hash, count, self_count))
-            })
-            .collect();
-
-        // Apply updates sequentially
-        for (hash, other_count, self_count) in updates {
-            let new_count = if self_count > other_count {
-                self_count - other_count
-            } else {
-                0
-            };
-
-            let removed = self_count - new_count;
-            total_counts_removed.fetch_add(removed, Ordering::Relaxed);
-
-            if new_count == 0 {
-                self.counts.remove(&hash);
-            } else {
-                self.counts.insert(hash, new_count);
-            }
-        }
-
-        // Update consumed bases
-        // Ensure consumed doesn't go negative
-        self.consumed = self.consumed.saturating_sub(other.consumed);
-
-        // Get final count of removed k-mers
-        let total_removed = total_counts_removed.load(Ordering::Relaxed);
-
-        // Print summary
-        println!("Removed {} k-mer counts from the table", total_removed);
-
-        Ok(total_removed)
-    }
 }
 
 #[pyclass]