2 files changed, 28 insertions, 0 deletions
diff --git a/src/metric/forest.rs b/src/metric/forest.rs
index 47eb413..887ff12 100644
--- a/src/metric/forest.rs
+++ b/src/metric/forest.rs
@@ -50,6 +50,24 @@ where
         }
         len
     }
+
+    /// Check if this forest is empty.
+    pub fn is_empty(&self) -> bool {
+        if !self.buffer.is_empty() {
+            return false;
+        }
+
+        self.trees.iter().flatten().next().is_none()
+    }
+}
+
+impl<T, U> Default for Forest<U>
+where
+    U: FromIterator<T> + IntoIterator<Item = T>,
+{
+    fn default() -> Self {
+        Self::new()
+    }
 }
 
 impl<T, U> Extend<T> for Forest<U>
diff --git a/src/metric/soft.rs b/src/metric/soft.rs
index 0d7dcdb..d443bfd 100644
--- a/src/metric/soft.rs
+++ b/src/metric/soft.rs
@@ -82,6 +82,16 @@ where
     }
 }
 
+impl<T, U> Default for SoftSearch<U>
+where
+    T: SoftDelete,
+    U: FromIterator<T> + IntoIterator<Item = T>,
+{
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl<T, U: Extend<T>> Extend<T> for SoftSearch<U> {
     fn extend<I: IntoIterator<Item = T>>(&mut self, iter: I) {
         self.0.extend(iter);