Fix clippy lints for all crates and features

... and check those in CI as well!

examples/pure/component/src/main.rs

@@ -143,8 +143,7 @@ mod numeric_input {
                         self.value
                             .as_ref()
                             .map(u32::to_string)
-                            .as_ref()
-                            .map(String::as_str)
+                            .as_deref()
                             .unwrap_or(""),
                         Event::InputChanged,
                     )

examples/pure/game_of_life/src/main.rs

@@ -350,7 +350,7 @@ mod grid {
             }
         }
 
-        pub fn view<'a>(&'a self) -> Element<'a, Message> {
+        pub fn view(&self) -> Element<Message> {
             Canvas::new(self)
                 .width(Length::Fill)
                 .height(Length::Fill)

examples/pure/game_of_life/src/preset.rs

@@ -1,7 +1,7 @@
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Preset {
     Custom,
-    XKCD,
+    Xkcd,
     Glider,
     SmallExploder,
     Exploder,
@@ -14,7 +14,7 @@ pub enum Preset {
 
 pub static ALL: &[Preset] = &[
     Preset::Custom,
-    Preset::XKCD,
+    Preset::Xkcd,
     Preset::Glider,
     Preset::SmallExploder,
     Preset::Exploder,
@@ -30,7 +30,7 @@ impl Preset {
         #[rustfmt::skip]
         let cells = match self {
             Preset::Custom => vec![],
-            Preset::XKCD => vec![
+            Preset::Xkcd => vec![
                 "  xxx  ",
                 "  x x  ",
                 "  x x  ",
@@ -116,7 +116,7 @@ impl Preset {
 
 impl Default for Preset {
     fn default() -> Preset {
-        Preset::XKCD
+        Preset::Xkcd
     }
 }
 
@@ -127,7 +127,7 @@ impl std::fmt::Display for Preset {
             "{}",
             match self {
                 Preset::Custom => "Custom",
-                Preset::XKCD => "xkcd #2293",
+                Preset::Xkcd => "xkcd #2293",
                 Preset::Glider => "Glider",
                 Preset::SmallExploder => "Small Exploder",
                 Preset::Exploder => "Exploder",

examples/pure/todos/src/main.rs

@@ -167,7 +167,7 @@ impl Application for Todos {
                 .size(30)
                 .on_submit(Message::CreateTask);
 
-                let controls = view_controls(&tasks, *filter);
+                let controls = view_controls(tasks, *filter);
                 let filtered_tasks =
                     tasks.iter().filter(|task| filter.matches(task));
 
@@ -446,15 +446,15 @@ struct SavedState {
 
 #[derive(Debug, Clone)]
 enum LoadError {
-    FileError,
-    FormatError,
+    File,
+    Format,
 }
 
 #[derive(Debug, Clone)]
 enum SaveError {
-    FileError,
-    WriteError,
-    FormatError,
+    File,
+    Write,
+    Format,
 }
 
 #[cfg(not(target_arch = "wasm32"))]
@@ -465,7 +465,7 @@ impl SavedState {
         {
             project_dirs.data_dir().into()
         } else {
-            std::env::current_dir().unwrap_or(std::path::PathBuf::new())
+            std::env::current_dir().unwrap_or_default()
         };
 
         path.push("todos.json");
@@ -480,37 +480,37 @@ impl SavedState {
 
         let mut file = async_std::fs::File::open(Self::path())
             .await
-            .map_err(|_| LoadError::FileError)?;
+            .map_err(|_| LoadError::File)?;
 
         file.read_to_string(&mut contents)
             .await
-            .map_err(|_| LoadError::FileError)?;
+            .map_err(|_| LoadError::File)?;
 
-        serde_json::from_str(&contents).map_err(|_| LoadError::FormatError)
+        serde_json::from_str(&contents).map_err(|_| LoadError::Format)
     }
 
     async fn save(self) -> Result<(), SaveError> {
         use async_std::prelude::*;
 
         let json = serde_json::to_string_pretty(&self)
-            .map_err(|_| SaveError::FormatError)?;
+            .map_err(|_| SaveError::Format)?;
 
         let path = Self::path();
 
         if let Some(dir) = path.parent() {
             async_std::fs::create_dir_all(dir)
                 .await
-                .map_err(|_| SaveError::FileError)?;
+                .map_err(|_| SaveError::File)?;
         }
 
         {
             let mut file = async_std::fs::File::create(path)
                 .await
-                .map_err(|_| SaveError::FileError)?;
+                .map_err(|_| SaveError::File)?;
 
             file.write_all(json.as_bytes())
                 .await
-                .map_err(|_| SaveError::WriteError)?;
+                .map_err(|_| SaveError::Write)?;
         }
 
         // This is a simple way to save at most once every couple seconds

examples/pure/tour/src/main.rs

@@ -78,14 +78,6 @@ impl Sandbox for Tour {
             .push(controls)
             .into();
 
-        let content = if self.debug {
-            // TODO
-            //content.explain(Color::BLACK)
-            content
-        } else {
-            content
-        };
-
         let scrollable =
             scrollable(container(content).width(Length::Fill).center_x());
 
@@ -494,7 +486,7 @@ impl<'a> Step {
             .push(ferris(width))
             .push(slider(100..=500, width, StepMessage::ImageWidthChanged))
             .push(
-                text(format!("Width: {} px", width.to_string()))
+                text(format!("Width: {} px", width))
                     .width(Length::Fill)
                     .horizontal_alignment(alignment::Horizontal::Center),
             )