diff --git a/src/converter.rs b/src/converter.rs
index ad26532..42c0c2d 100644
--- a/src/converter.rs
+++ b/src/converter.rs
@@ -95,7 +95,7 @@ pub fn svg2program(doc: &Document, options: ProgramOptions, mach: Machine) -> Ve
             )
         }
 
-        if transforms.len() != 0 {
+        if !transforms.is_empty() {
             let transform = transforms
                 .iter()
                 .fold(Transform2D::identity(), |acc, t| acc.post_transform(t));
@@ -121,7 +121,7 @@ pub fn svg2program(doc: &Document, options: ProgramOptions, mach: Machine) -> Ve
         if node.has_children() {
             node_stack.push((node, node.children()));
             name_stack.push(node_name(&node));
-        } else if transforms.len() != 0 {
+        } else if !transforms.is_empty() {
             // Pop transform early, since this is the only element that has it
             turtle.pop_transform();
         }
diff --git a/src/gcode/mod.rs b/src/gcode/mod.rs
index 47737af..aee17bd 100644
--- a/src/gcode/mod.rs
+++ b/src/gcode/mod.rs
@@ -66,7 +66,7 @@ pub fn parse_gcode(gcode: &str) -> Vec<Word> {
     if let Some(l) = letter {
         vec.push(Word {
             letter: l,
-            value: parse_value(&gcode[value_range.clone()]),
+            value: parse_value(&gcode[value_range]),
         });
     }
     vec
@@ -78,7 +78,7 @@ fn parse_value(word: &str) -> Value {
     } else {
         let index_of_dot = word.find('.');
         Value::Fractional(
-            word[..index_of_dot.unwrap_or(word.len())]
+            word[..index_of_dot.unwrap_or_else(|| word.len())]
                 .parse::<u32>()
                 .unwrap(),
             index_of_dot.map(|j| word[j + 1..].parse::<u32>().unwrap()),
diff --git a/src/gcode/spec.rs b/src/gcode/spec.rs
index f083861..0304e3a 100644
--- a/src/gcode/spec.rs
+++ b/src/gcode/spec.rs
@@ -87,11 +87,11 @@ macro_rules! commands {
                 }
             }
 
-            pub fn word<'a>(&'a self) -> &'a CommandWord {
+            pub fn word(&'_ self) -> &'_ CommandWord {
                 &self.command_word
             }
 
-            pub fn get<'a>(&'a self, letter: char) -> Option<&'a Word> {
+            pub fn get(&'_ self, letter: char) -> Option<&'_ Word> {
                 let letter = letter.to_ascii_uppercase();
                 self.arguments.iter().find(|arg| arg.letter == letter)
             }
diff --git a/src/main.rs b/src/main.rs
index d60b5d8..2be2b34 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -22,7 +22,7 @@ mod postprocess;
 mod turtle;
 
 fn main() -> io::Result<()> {
-    if let Err(_) = env::var("RUST_LOG") {
+    if env::var("RUST_LOG").is_err() {
         env::set_var("RUST_LOG", "svg2gcode=info")
     }
     env_logger::init();
diff --git a/src/postprocess.rs b/src/postprocess.rs
index 5d68b04..7c2b576 100644
--- a/src/postprocess.rs
+++ b/src/postprocess.rs
@@ -8,17 +8,17 @@ pub fn set_origin(commands: &mut [Command], origin: F64Point) {
     let mut is_relative = false;
     let mut current_position = point(0f64, 0f64);
 
-    for i in 0..commands.len() {
-        match &commands[i].word() {
+    for command in commands {
+        match command.word() {
             RapidPositioning | LinearInterpolation => {
-                let x: f64 = (&commands[i].get('X').unwrap().value).into();
-                let y: f64 = (&commands[i].get('Y').unwrap().value).into();
+                let x: f64 = (&command.get('X').unwrap().value).into();
+                let y: f64 = (&command.get('Y').unwrap().value).into();
                 if is_relative {
                     current_position += vector(x, y);
                 } else {
                     current_position = point(x, y);
-                    commands[i].set('X', Value::Float((current_position + offset).x));
-                    commands[i].set('Y', Value::Float((current_position + offset).y));
+                    command.set('X', Value::Float((current_position + offset).x));
+                    command.set('Y', Value::Float((current_position + offset).y));
                 }
             }
             AbsoluteDistanceMode => {
@@ -36,8 +36,7 @@ fn get_bounding_box(commands: &[Command]) -> (F64Point, F64Point) {
     let (mut minimum, mut maximum) = (point(0f64, 0f64), point(0f64, 0f64));
     let mut is_relative = false;
     let mut current_position = point(0f64, 0f64);
-    for i in 0..commands.len() {
-        let command = &commands[i];
+    for command in commands {
         match command.word() {
             AbsoluteDistanceMode => {
                 is_relative = false;
diff --git a/src/turtle.rs b/src/turtle.rs
index ef0eed8..814d88f 100644
--- a/src/turtle.rs
+++ b/src/turtle.rs
@@ -123,8 +123,8 @@ impl Turtle {
             .iter()
             .chain(self.machine.absolute().iter())
             .chain(std::iter::once(&Self::linear_interpolation(
-                self.initial_position.x.into(),
-                self.initial_position.y.into(),
+                self.initial_position.x,
+                self.initial_position.y,
                 z.into(),
                 f.into(),
             )))
@@ -174,8 +174,8 @@ impl Turtle {
             .iter()
             .chain(self.machine.absolute().iter())
             .chain(std::iter::once(&Self::linear_interpolation(
-                to.x.into(),
-                to.y.into(),
+                to.x,
+                to.y,
                 z.into(),
                 f.into(),
             )))
@@ -200,7 +200,7 @@ impl Turtle {
             .flattened(tolerance)
             .map(|point| {
                 last_point.set(point);
-                Self::linear_interpolation(point.x.into(), point.y.into(), z.into(), f.into())
+                Self::linear_interpolation(point.x, point.y, z, f)
             })
             .collect();
         self.current_position = last_point.get();
@@ -419,10 +419,10 @@ impl Turtle {
         let mut ellipse = vec![];
         arc.for_each_flattened(tolerance, &mut |point: F64Point| {
             ellipse.push(Self::linear_interpolation(
-                point.x.into(),
-                point.y.into(),
-                z.into(),
-                f.into(),
+                point.x,
+                point.y,
+                z,
+                f,
             ));
             last_point.set(point);
         });
@@ -457,9 +457,7 @@ impl Turtle {
 
     /// Remove all transforms, returning to true absolute coordinates
     pub fn pop_all_transforms(&mut self) {
-        while self.transform_stack.len() != 0 {
-            self.pop_transform();
-        }
+        self.transform_stack.clear();
         self.current_transform = Transform2D::identity();
     }