emulator: applied some clippy lints

src/emulator/ui/stack_inspector.rs

@@ -1,17 +1,21 @@
 use crate::{
     common::instructions::Register,
-    emulator::{
-        system::model::State,
-        ui::interface::{Component, EmulatorUI},
-    },
+    emulator::{system::model::State, ui::interface::Component},
 };
 
 pub struct StackInspector {
     visible: bool,
 }
 
+impl Default for StackInspector {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl StackInspector {
-    pub fn new() -> Self {
+    #[must_use]
+    pub const fn new() -> Self {
         Self { visible: false }
     }
 }
@@ -29,7 +33,7 @@ impl Component for StackInspector {
         super::interface::Category::Memory
     }
 
-    fn render(&mut self, state: &mut State, ui: &mut egui::Ui, ctx: &egui::Context) {
+    fn render(&mut self, state: &mut State, ui: &mut egui::Ui, _ctx: &egui::Context) {
         ui.vertical(|ui| {
             ui.heading("Stack Inspector");
             egui::ScrollArea::vertical()
@@ -44,13 +48,13 @@ impl Component for StackInspector {
                             ui.label("Value");
                             ui.end_row();
 
-                            for (i, value) in state.stack_view.iter().take(32).enumerate() {
+                            for (i, value) in (0u32..).zip(state.stack_view.iter().take(32)) {
                                 ui.label(format!(
                                     "{} [{}]",
                                     i,
-                                    state.reg_file.get(Register::Spr) - i as u32 * 4
+                                    state.reg_file.get(Register::Spr) - i * 4
                                 ));
-                                ui.label(format!("0x{:08X} ({})", value, value));
+                                ui.label(format!("0x{value:08X} ({value})"));
                                 ui.end_row();
                             }