diff --git a/src/app/app.rs b/src/app/app.rs
index acea4d8..aa49a76 100644
--- a/src/app/app.rs
+++ b/src/app/app.rs
@@ -97,8 +97,8 @@ impl Widget for &App {
                 fn center_text(text: &str, avaliable_space: i32) -> String {
                     let margin = avaliable_space - text.len() as i32;
                     let margin = margin / 2;
-                    let l_margin = (0..margin).into_iter().map(|_| ' ').collect::<String>();
-                    let r_margin = (0..(margin - (l_margin.len() as i32))).into_iter().map(|_| ' ').collect::<String>();
+                    let l_margin = (0..margin).map(|_| ' ').collect::<String>();
+                    let r_margin = (0..(margin - (l_margin.len() as i32))).map(|_| ' ').collect::<String>();
                     format!("{l_margin}{text}{r_margin}")
                 }
 
@@ -114,7 +114,7 @@ impl Widget for &App {
 
                         let bg = if y_idx == self.grid.cursor().1 {
                             Color::DarkGray
-                        } else if y_idx % 2 == 0 {
+                        } else if y_idx.is_multiple_of(2) {
                             ORANGE1
                         } else {
                             ORANGE2
@@ -127,7 +127,7 @@ impl Widget for &App {
 
                         let bg = if x_idx == self.grid.cursor().0 {
                             Color::DarkGray
-                        } else if x_idx % 2 == 0 {
+                        } else if x_idx.is_multiple_of(2) {
                             ORANGE1
                         } else {
                             ORANGE2
@@ -173,7 +173,7 @@ impl Widget for &App {
                                 suggest_upper_bound = Some(display.len() as u16);
                                 // check for cells to the right, see if we should truncate the cell width
                                 for i in 1..(display.len() as f32 / cell_width as f32).ceil() as usize {
-                                    if let Some(_) = self.grid.get_cell_raw(x_idx + i, y_idx) {
+                                    if self.grid.get_cell_raw(x_idx + i, y_idx).is_some() {
                                         suggest_upper_bound = Some(cell_width * i as u16);
                                         break;
                                     }
@@ -222,7 +222,7 @@ impl Widget for &App {
                     } else if let Some(suggestion) = suggest_upper_bound {
                         let max_available_width = area.width - x_off;
                         // draw the biggest cell possible, without going OOB off the screen
-                        let width = min(max_available_width, suggestion as u16);
+                        let width = min(max_available_width, suggestion);
                         // Don't draw too small tho, we want full-sized cells, minium
                         let width = max(cell_width, width);
 
@@ -280,22 +280,19 @@ impl App {
     }
 
     fn file_name_display(&self) -> String {
-        let file_name_status = {
-            let mut file_name = "[No Name]";
-            let mut icon = "";
-            if let Some(file) = &self.file {
-                if let Some(f) = file.file_name() {
-                    if let Some(f) = f.to_str() {
-                        file_name = f;
-                    }
+        let mut file_name = "[No Name]";
+        let mut icon = "";
+        if let Some(file) = &self.file {
+            if let Some(f) = file.file_name() {
+                if let Some(f) = f.to_str() {
+                    file_name = f;
                 }
             }
-            if self.grid.needs_to_be_saved() {
-                icon = "[+]";
-            }
-            format!("{file_name}{icon}")
-        };
-        file_name_status
+        }
+        if self.grid.needs_to_be_saved() {
+            icon = "[+]";
+        }
+        format!("{file_name}{icon}")
     }
 
     fn draw(&self, frame: &mut Frame) {
@@ -362,7 +359,7 @@ impl App {
                     event::KeyCode::Char(c) => chord.add_char(c),
                     event::KeyCode::Enter => {
                         // tmp is to get around reference issues.
-                        let tmp = pos.clone();
+                        let tmp = *pos;
                         Mode::process_cmd(self);
                         self.mode = Mode::Visual(tmp)
                     }
@@ -421,7 +418,7 @@ impl App {
             },
             Mode::Normal => match event::read()? {
                 event::Event::Key(key_event) => match key_event.code {
-                    event::KeyCode::F(n) => {},
+                    event::KeyCode::F(_n) => {}
                     event::KeyCode::Char(c) => Mode::process_key(self, c),
                     // Pretend that the arrow keys are vim movement keys
                     event::KeyCode::Left => Mode::process_key(self, 'h'),
@@ -432,12 +429,14 @@ impl App {
                     event::KeyCode::PageUp => self.grid.redo(),
                     event::KeyCode::PageDown => self.grid.undo(),
                     event::KeyCode::Modifier(modifier_key_code) => {
-                        if let event::ModifierKeyCode::LeftControl | event::ModifierKeyCode::RightControl = modifier_key_code {
+                        if let event::ModifierKeyCode::LeftControl | event::ModifierKeyCode::RightControl =
+                            modifier_key_code
+                        {
                             // TODO my terminal (alacritty) isn't showing me ctrl presses. I know
                             // that they work tho, since ctrl+r works here in neovim.
                             // panic!("heard ctrl");
                         }
-                    },
+                    }
                     _ => {}
                 },
                 _ => {}
diff --git a/src/app/error_msg.rs b/src/app/error_msg.rs
index 0247c36..d660e08 100644
--- a/src/app/error_msg.rs
+++ b/src/app/error_msg.rs
@@ -47,7 +47,7 @@ impl Widget for &StatusMessage {
         let msg = if self.start.elapsed().as_secs() > 3 {
             String::new()
         } else {
-            self.msg.clone().unwrap_or(String::new())
+            self.msg.clone().unwrap_or_default()
         };
 
         let style = match self.msg_type {
@@ -57,4 +57,4 @@ impl Widget for &StatusMessage {
 
         Paragraph::new(msg).style(style).render(area, buf);
     }
-}
\ No newline at end of file
+}
diff --git a/src/app/logic/calc.rs b/src/app/logic/calc.rs
index 443a3db..e7b7f6c 100644
--- a/src/app/logic/calc.rs
+++ b/src/app/logic/calc.rs
@@ -19,8 +19,7 @@ use crate::app::app::App;
 use crate::app::mode::Mode;
 
 pub fn get_header_size() -> usize {
-    let row_header_width = LEN.to_string().len();
-    row_header_width
+    LEN.to_string().len()
 }
 
 pub const LEN: usize = 1001;
@@ -216,7 +215,7 @@ impl Grid {
                     if let Ok(val) = self.evaluate(&cell.to_string())
                         && resolve_values
                     {
-                        format!("{}{}", val.to_string(), delim)
+                        format!("{val}{delim}")
                     } else {
                         format!("{}{}", cell.escaped_csv_string(), delim)
                     }
@@ -232,7 +231,7 @@ impl Grid {
         Ok(())
     }
 
-    pub fn get_grid<'a>(&'a self) -> &'a CellGrid {
+    pub fn get_grid(&self) -> &CellGrid {
         &self.grid_history[self.current_grid]
     }
 
@@ -246,7 +245,7 @@ impl Grid {
 
     pub fn transact_on_grid<F>(&mut self, mut action: F)
     where
-        F: FnMut(&mut CellGrid) -> (),
+        F: FnMut(&mut CellGrid),
     {
         // push on a new reality
         let new = self.get_grid().clone();
@@ -377,7 +376,7 @@ impl Grid {
                         f.custom_translate_cell((0, 0), (0, 1), |rolling, old, new| {
                             if let Some((_, arg_y)) = Grid::parse_to_idx(old) {
                                 if arg_y < insertion_y { rolling.to_owned() } else { rolling.replace(old, new) }
-                            } else if let Some(_) = Grid::range_as_indices(old) {
+                            } else if Grid::range_as_indices(old).is_some() {
                                 // ranges are  not changed when moved vertically
                                 rolling.to_string()
                             } else {
@@ -454,7 +453,7 @@ impl Grid {
             return Err(format!("\"{eq}\" is not an equation"));
         }
 
-        let ctx = ctx::CallbackContext::new(&self);
+        let ctx = ctx::CallbackContext::new(self);
 
         let prep_for_return = |v: Value| {
             if v.is_number() {
@@ -505,13 +504,12 @@ impl Grid {
     }
 
     pub fn char_to_idx(i: &str) -> usize {
-        let x_idx = i
+        i
             .chars()
             .filter(|f| f.is_alphabetic())
             .enumerate()
             .map(|(idx, c)| ((c.to_ascii_lowercase() as usize).saturating_sub(97)) + (26 * idx))
-            .fold(0, |a, b| a + b);
-        x_idx
+            .sum()
     }
 
     /// Parse values in the format of A0, C10 ZZ99, etc, and
@@ -564,7 +562,7 @@ impl Grid {
         if x >= LEN || y >= LEN {
             return &None;
         }
-        &self.get_grid().get_cell_raw(x, y)
+        self.get_grid().get_cell_raw(x, y)
     }
 
     pub fn num_to_char(idx: usize) -> String {
diff --git a/src/app/logic/cell.rs b/src/app/logic/cell.rs
index 9d40433..18b1b71 100644
--- a/src/app/logic/cell.rs
+++ b/src/app/logic/cell.rs
@@ -11,15 +11,15 @@ pub enum CellType {
     Equation(String),
 }
 
-impl Into<CellType> for f64 {
-    fn into(self) -> CellType {
-        CellType::duck_type(self.to_string())
+impl From<f64> for CellType {
+    fn from(value: f64) -> Self {
+        CellType::duck_type(value.to_string())
     }
 }
 
-impl Into<CellType> for String {
-    fn into(self) -> CellType {
-        CellType::duck_type(self)
+impl From<String> for CellType {
+    fn from(value: String) -> Self {
+        CellType::duck_type(value)
     }
 }
 
@@ -40,7 +40,7 @@ impl CellType {
         if display.contains(CSV_DELIMITER) { format!("\"{display}\"") } else { display }
     }
 
-    fn duck_type<'a>(value: impl Into<String>) -> Self {
+    fn duck_type(value: impl Into<String>) -> Self {
         let value = value.into();
 
         if let Ok(parse) = value.parse::<f64>() {
@@ -109,9 +109,9 @@ impl CellType {
                         let x2 = x2 as i32;
                         let y2 = y2 as i32;
 
-                        let dest_x = if lock_x { src_x as usize } else { (src_x as i32 + (x2 - x1)) as usize };
+                        let dest_x = if lock_x { src_x } else { (src_x as i32 + (x2 - x1)) as usize };
 
-                        let dest_y = if lock_y { src_y as usize } else { (src_y as i32 + (y2 - y1)) as usize };
+                        let dest_y = if lock_y { src_y } else { (src_y as i32 + (y2 - y1)) as usize };
 
                         let alpha = Grid::num_to_char(dest_x);
 
diff --git a/src/app/mode.rs b/src/app/mode.rs
index fc99aa9..301088a 100644
--- a/src/app/mode.rs
+++ b/src/app/mode.rs
@@ -87,7 +87,7 @@ impl Mode {
                                 path.file_name().map(|f| f.to_str().unwrap_or("n/a")).unwrap_or("n/a")
                             ));
 
-                            if let None = app.file {
+                            if app.file.is_none() {
                                 app.file = Some(path)
                             }
                         }
@@ -197,7 +197,7 @@ impl Mode {
                 }
                 "export" => {
                     if let Some(arg1) = args.get(1) {
-                        save_range(&arg1);
+                        save_range(arg1);
                     } else {
                         app.msg = StatusMessage::error("export <path.csv>")
                     }
@@ -286,7 +286,7 @@ impl Mode {
                     'i' | 'a' => {
                         let (x, y) = app.grid.cursor();
 
-                        let val = app.grid.get_cell_raw(x, y).as_ref().map(|f| f.to_string()).unwrap_or(String::new());
+                        let val = app.grid.get_cell_raw(x, y).as_ref().map(|f| f.to_string()).unwrap_or_default();
 
                         app.mode = Mode::Insert(Chord::from(val));
                     }
@@ -477,14 +477,12 @@ impl Mode {
         let len = match &self {
             Mode::Insert(edit) | Mode::VisualCmd(_, edit) | Mode::Command(edit) | Mode::Chord(edit) => edit.len(),
             Mode::Normal => {
-                let len = cell.as_ref().map(|f| f.to_string().len()).unwrap_or_default();
-                len
+                cell.as_ref().map(|f| f.to_string().len()).unwrap_or_default()
             }
             Mode::Visual(_) => 0,
         };
         // min 20 chars, expand if needed
-        let len = max(len as u16 + 1, 20);
-        len
+        max(len as u16 + 1, 20)
     }
 
     pub fn render(&self, f: &mut ratatui::Frame, area: prelude::Rect, cell: &Option<CellType>) {
@@ -498,8 +496,7 @@ impl Mode {
             Mode::Chord(chord) => f.render_widget(chord, area),
             Mode::Normal => f.render_widget(
                 Paragraph::new({
-                    let cell = cell.as_ref().map(|f| f.to_string()).unwrap_or_default();
-                    cell
+                    cell.as_ref().map(|f| f.to_string()).unwrap_or_default()
                 }),
                 area,
             ),
@@ -522,8 +519,7 @@ impl From<String> for Chord {
 
 impl Chord {
     pub fn new(inital: char) -> Self {
-        let mut buf = Vec::new();
-        buf.push(inital);
+        let buf = vec![inital];
 
         Self { buf }
     }
diff --git a/src/app/screen.rs b/src/app/screen.rs
index 65c2651..23fce25 100644
--- a/src/app/screen.rs
+++ b/src/app/screen.rs
@@ -48,11 +48,11 @@ impl ScreenSpace {
             // ======= X =======
             // screen seems to be 2 cells smaller than it should be
             // this is probably related to issue #6
-            let x_cells = (screen_size.0 / self.get_cell_width(vars) as usize) -2;
+            let x_cells = (screen_size.0 / self.get_cell_width(vars)) -2;
             // ======= Y =======
             // screen seems to be 2 cells smaller than it should be
             // this is probably related to issue #6
-            let y_cells = (screen_size.1 / self.get_cell_height(vars) as usize) -2;
+            let y_cells = (screen_size.1 / self.get_cell_height(vars)) -2;
             (x_cells,y_cells)
         } else {
             (0,0)
diff --git a/src/main.rs b/src/main.rs
index 201a029..4e90c97 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,10 @@
+#![allow(clippy::needless_return)]
+#![allow(clippy::len_zero)]
+#![allow(clippy::collapsible_if)]
+#![allow(clippy::collapsible_else_if)]
+#![allow(clippy::collapsible_match)]
+#![allow(clippy::single_match)]
+
 mod app;
 
 use std::env::args;