diff --git a/src/node.rs b/src/node.rs
index 2844369..a0e98bd 100644
--- a/src/node.rs
+++ b/src/node.rs
@@ -1,8 +1,11 @@
 pub mod simple_rnode;
 
-use std::fmt::{Debug, Display};
+use std::{
+    fmt::{Debug, Display},
+    hash::{Hash, Hasher},
+};
 
-use crate::node::simple_rnode::{RootedTreeNode, RootedPhyloNode, WeightedNode};
+use crate::node::simple_rnode::{RootedPhyloNode, RootedTreeNode, WeightedNode};
 
 // use std::rc::Rc;
 use std::sync::Arc;
@@ -10,7 +13,7 @@ use std::sync::Arc;
 pub type NodeID = Arc<usize>;
 
 #[derive(Clone)]
-pub struct Node{
+pub struct Node {
     id: NodeID,
     parent: Option<NodeID>,
     children: Vec<NodeID>,
@@ -18,12 +21,11 @@ pub struct Node{
     weight: Option<f64>,
 }
 
-impl RootedTreeNode for Node
-{
+impl RootedTreeNode for Node {
     type NodeID = NodeID;
 
-    fn new(id: NodeID)->Self{
-        Node{
+    fn new(id: NodeID) -> Self {
+        Node {
             id: Arc::clone(&id),
             parent: None,
             children: vec![],
@@ -32,7 +34,7 @@ impl RootedTreeNode for Node
         }
     }
 
-    fn get_id(&self)->Self::NodeID {
+    fn get_id(&self) -> Self::NodeID {
         Arc::clone(&self.id)
     }
 
@@ -40,85 +42,104 @@ impl RootedTreeNode for Node
         self.id = Arc::clone(&id)
     }
 
-    fn set_parent(&mut self, parent: Option<Self::NodeID>){
+    fn set_parent(&mut self, parent: Option<Self::NodeID>) {
         self.parent = parent;
     }
-    fn get_parent(&self)->Option<Self::NodeID>{
+    fn get_parent(&self) -> Option<Self::NodeID> {
         self.parent.clone()
     }
-    fn get_children(&self)->impl IntoIterator<Item=Self::NodeID, IntoIter = impl ExactSizeIterator<Item = Self::NodeID>>{
+    fn get_children(
+        &self,
+    ) -> impl IntoIterator<Item = Self::NodeID, IntoIter = impl ExactSizeIterator<Item = Self::NodeID>>
+    {
         self.children.clone()
     }
-    fn add_child(&mut self, child: Self::NodeID){
+    fn add_child(&mut self, child: Self::NodeID) {
         self.children.push(child);
     }
-    fn remove_child(&mut self, child:&Self::NodeID) {
+    fn remove_child(&mut self, child: &Self::NodeID) {
         self.children.retain(|x| x != child);
     }
 }
 
-impl RootedPhyloNode for Node
-{
+impl RootedPhyloNode for Node {
     type Taxa = String;
 
-    fn get_taxa(&self)->Option<Self::Taxa>{
-        match &self.taxa{
+    fn get_taxa(&self) -> Option<Self::Taxa> {
+        match &self.taxa {
             None => None,
-            Some(t) => Some(t.to_string())
+            Some(t) => Some(t.to_string()),
         }
     }
 
-    fn set_taxa(&mut self, taxa: Option<String>){
-        self.taxa = match taxa{
+    fn set_taxa(&mut self, taxa: Option<String>) {
+        self.taxa = match taxa {
             None => None,
             Some(t) => Some(Arc::new(t)),
         };
     }
-
 }
 
-impl WeightedNode for Node
-{
+impl WeightedNode for Node {
     type Weight = f64;
 
-    fn get_weight(&self)->Option<Self::Weight>{
+    fn get_weight(&self) -> Option<Self::Weight> {
         self.weight.clone()
     }
 
-    fn set_weight(&mut self, w: Option<Self::Weight>){
+    fn set_weight(&mut self, w: Option<Self::Weight>) {
         self.weight = w;
     }
-
 }
 
-impl Debug for Node
-{
+impl Debug for Node {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}:{}:{}:{}", self.get_id(),self.node_type(), match self.get_taxa(){
-            None => "None".to_string(),
-            Some(t) => t.to_string(),
-        },
-        match self.get_weight() {
-            None => "".to_string(),
-            Some(t) => t.to_string(),
-
-        }
-    )
+        write!(
+            f,
+            "{}:{}:{}:{}",
+            self.get_id(),
+            self.node_type(),
+            match self.get_taxa() {
+                None => "None".to_string(),
+                Some(t) => t.to_string(),
+            },
+            match self.get_weight() {
+                None => "".to_string(),
+                Some(t) => t.to_string(),
+            }
+        )
     }
 }
 
-impl Display for Node
-{
+impl Display for Node {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}:{}:{}:{}", self.get_id(),self.node_type(), match self.get_taxa(){
-            None => "None".to_string(),
-            Some(t) => t.to_string(),
-        },
-        match self.get_weight() {
-            None => "".to_string(),
-            Some(t) => t.to_string(),
+        write!(
+            f,
+            "{}:{}:{}:{}",
+            self.get_id(),
+            self.node_type(),
+            match self.get_taxa() {
+                None => "None".to_string(),
+                Some(t) => t.to_string(),
+            },
+            match self.get_weight() {
+                None => "".to_string(),
+                Some(t) => t.to_string(),
+            }
+        )
+    }
+}
 
-        }
-    )
+impl Hash for Node {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.id.hash(state);
     }
 }
+
+impl PartialEq for Node {
+    fn eq(&self, other: &Self) -> bool {
+        self.id == other.id
+    }
+}
+
+impl Eq for Node {}