diff --git a/src/common.rs b/src/common.rs
index 466df22..1e05ed6 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -36,17 +36,17 @@ pub fn cidr_parts(cidr: &str) -> Result<(&str, Option<&str>), IpNetworkError> {
         let (ip, prefix) = cidr.split_at(sep);
         // Error if cidr has multiple slashes
         if prefix[1..].find('/').is_some() {
-            return Err(IpNetworkError::InvalidCidrFormat(format!(
+            Err(IpNetworkError::InvalidCidrFormat(format!(
                 "CIDR must contain a single '/': {}",
                 cidr
-            )));
+            )))
         } else {
             // Handle the case when cidr has exactly one slash
-            return Ok((ip, Some(&prefix[1..])));
+            Ok((ip, Some(&prefix[1..])))
         }
     } else {
         // Handle the case when cidr does not have a slash
-        return Ok((cidr, None));
+        Ok((cidr, None))
     }
 }
 
diff --git a/src/ipv4.rs b/src/ipv4.rs
index 21c04bd..51fb7e5 100644
--- a/src/ipv4.rs
+++ b/src/ipv4.rs
@@ -61,7 +61,7 @@ impl Ipv4Network {
     /// Returns an iterator over `Ipv4Network`. Each call to `next` will return the next
     /// `Ipv4Addr` in the given network. `None` will be returned when there are no more
     /// addresses.
-    pub fn iter(&self) -> Ipv4NetworkIterator {
+    pub fn iter(self) -> Ipv4NetworkIterator {
         let start = u32::from(self.network());
         let end = start + (self.size() - 1);
         Ipv4NetworkIterator {
@@ -70,11 +70,11 @@ impl Ipv4Network {
         }
     }
 
-    pub fn ip(&self) -> Ipv4Addr {
+    pub fn ip(self) -> Ipv4Addr {
         self.addr
     }
 
-    pub fn prefix(&self) -> u8 {
+    pub fn prefix(self) -> u8 {
         self.prefix
     }
 
@@ -109,7 +109,7 @@ impl Ipv4Network {
     /// let net: Ipv4Network = "127.0.0.0/16".parse().unwrap();
     /// assert_eq!(net.mask(), Ipv4Addr::new(255, 255, 0, 0));
     /// ```
-    pub fn mask(&self) -> Ipv4Addr {
+    pub fn mask(self) -> Ipv4Addr {
         let prefix = self.prefix;
         let mask = !(0xffff_ffff as u64 >> prefix) as u32;
         Ipv4Addr::from(mask)
@@ -127,7 +127,7 @@ impl Ipv4Network {
     /// let net: Ipv4Network = "10.1.9.32/16".parse().unwrap();
     /// assert_eq!(net.network(), Ipv4Addr::new(10, 1, 0, 0));
     /// ```
-    pub fn network(&self) -> Ipv4Addr {
+    pub fn network(self) -> Ipv4Addr {
         let mask = u32::from(self.mask());
         let ip = u32::from(self.addr) & mask;
         Ipv4Addr::from(ip)
@@ -145,7 +145,7 @@ impl Ipv4Network {
     /// let net: Ipv4Network = "10.9.0.32/16".parse().unwrap();
     /// assert_eq!(net.broadcast(), Ipv4Addr::new(10, 9, 255, 255));
     /// ```
-    pub fn broadcast(&self) -> Ipv4Addr {
+    pub fn broadcast(self) -> Ipv4Addr {
         let mask = u32::from(self.mask());
         let broadcast = u32::from(self.addr) | !mask;
         Ipv4Addr::from(broadcast)
@@ -163,7 +163,7 @@ impl Ipv4Network {
     /// assert!(net.contains(Ipv4Addr::new(127, 0, 0, 70)));
     /// assert!(!net.contains(Ipv4Addr::new(127, 0, 1, 70)));
     /// ```
-    pub fn contains(&self, ip: Ipv4Addr) -> bool {
+    pub fn contains(self, ip: Ipv4Addr) -> bool {
         let mask = !(0xffff_ffff as u64 >> self.prefix) as u32;
         let net = u32::from(self.addr) & mask;
         (u32::from(ip) & mask) == net
@@ -183,7 +183,7 @@ impl Ipv4Network {
     /// let tinynet: Ipv4Network = "0.0.0.0/32".parse().unwrap();
     /// assert_eq!(tinynet.size(), 1);
     /// ```
-    pub fn size(&self) -> u32 {
+    pub fn size(self) -> u32 {
         let host_bits = u32::from(IPV4_BITS - self.prefix);
         (2 as u32).pow(host_bits)
     }
@@ -205,7 +205,7 @@ impl Ipv4Network {
     /// let net2: Ipv4Network = "10.0.0.0/16".parse().unwrap();
     /// assert_eq!(net2.nth(256).unwrap(), Ipv4Addr::new(10, 0, 1, 0));
     /// ```
-    pub fn nth(&self, n: u32) -> Option<Ipv4Addr> {
+    pub fn nth(self, n: u32) -> Option<Ipv4Addr> {
         if n < self.size() {
             let net = u32::from(self.network());
             Some(Ipv4Addr::from(net + n))
diff --git a/src/ipv6.rs b/src/ipv6.rs
index 3262eaa..521c119 100644
--- a/src/ipv6.rs
+++ b/src/ipv6.rs
@@ -72,7 +72,7 @@ impl Ipv6Network {
 
         Ipv6NetworkIterator {
             next: Some(start),
-            end: end,
+            end,
         }
     }