fix most of the clippy linter warnings

src/authentication.rs

@@ -51,7 +51,7 @@ pub fn create_credentials(path: &Path) -> Result<RespotCredentials, String> {
                     }));
                     s.quit();
                 })
-                .button("Quit", |s| s.quit());
+                .button("Quit", Cursive::quit);
             s.pop_layer();
             s.add_layer(login_view);
         })
@@ -64,7 +64,7 @@ pub fn create_credentials(path: &Path) -> Result<RespotCredentials, String> {
             // not a dialog to let people copy & paste the URL
             let url_notice = TextView::new(format!("Browse to {}", &urls["login_url"]));
 
-            let controls = Button::new("Quit", |s| s.quit());
+            let controls = Button::new("Quit", Cursive::quit);
 
             let login_view = LinearLayout::new(cursive::direction::Orientation::Vertical)
                 .child(url_notice)
@@ -75,7 +75,7 @@ pub fn create_credentials(path: &Path) -> Result<RespotCredentials, String> {
             s.pop_layer();
             s.add_layer(login_view)
         })
-        .button("Quit", |s| s.quit());
+        .button("Quit", Cursive::quit);
 
     login_cursive.add_layer(info_view);
     login_cursive.run();

src/commands.rs

@@ -248,7 +248,11 @@ impl CommandManager {
     }
 
     pub fn handle(&self, s: &mut Cursive, cmd: String) {
-        let components: Vec<String> = cmd.trim().split(' ').map(|s| s.to_string()).collect();
+        let components: Vec<String> = cmd
+            .trim()
+            .split(' ')
+            .map(std::string::ToString::to_string)
+            .collect();
 
         let cmd = self.handle_aliases(&components[0]);
         let args = components[1..].to_vec();

src/library.rs

@@ -354,7 +354,7 @@ impl Library {
         let mut store = self.artists.write().unwrap();
 
         for artist in artists.iter_mut() {
-            let pos = store.iter().position(|a| &a.id == &artist.id);
+            let pos = store.iter().position(|a| a.id == artist.id);
             if let Some(i) = pos {
                 store[i].is_followed = true;
                 continue;
@@ -366,11 +366,11 @@ impl Library {
         }
     }
 
-    fn insert_artist(&self, id: &String, name: &String) {
+    fn insert_artist(&self, id: &str, name: &str) {
         let mut artists = self.artists.write().unwrap();
 
-        if !artists.iter().any(|a| &a.id == id) {
-            let mut artist = Artist::new(id.clone(), name.clone());
+        if !artists.iter().any(|a| a.id == id) {
+            let mut artist = Artist::new(id.to_string(), name.to_string());
             artist.tracks = Some(Vec::new());
             artists.push(artist);
         }
@@ -402,7 +402,7 @@ impl Library {
                         .items
                         .iter()
                         .enumerate()
-                        .any(|(i, a)| &a.album.id != &store[i].id)
+                        .any(|(i, a)| a.album.id != store[i].id)
                 {
                     return;
                 }
@@ -446,7 +446,7 @@ impl Library {
                         .items
                         .iter()
                         .enumerate()
-                        .any(|(i, t)| &t.track.id != &store[i].id)
+                        .any(|(i, t)| t.track.id != store[i].id)
                 {
                     return;
                 }
@@ -539,14 +539,13 @@ impl Library {
             return;
         }
 
-        if api {
-            if self
+        if api
+            && self
                 .spotify
                 .current_user_saved_tracks_add(tracks.iter().map(|t| t.id.clone()).collect())
                 .is_none()
-            {
-                return;
-            }
+        {
+            return;
         }
 
         {
@@ -573,14 +572,13 @@ impl Library {
             return;
         }
 
-        if api {
-            if self
+        if api
+            && self
                 .spotify
                 .current_user_saved_tracks_delete(tracks.iter().map(|t| t.id.clone()).collect())
                 .is_none()
-            {
-                return;
-            }
+        {
+            return;
         }
 
         {

src/spotify.rs

@@ -43,7 +43,7 @@ use events::{Event, EventManager};
 use track::Track;
 
 enum WorkerCommand {
-    Load(Track),
+    Load(Box<Track>),
     Play,
     Pause,
     Stop,
@@ -585,7 +585,7 @@ impl Spotify {
     pub fn load(&self, track: &Track) {
         info!("loading track: {:?}", track);
         self.channel
-            .unbounded_send(WorkerCommand::Load(track.clone()))
+            .unbounded_send(WorkerCommand::Load(Box::new(track.clone())))
             .unwrap();
     }
 

src/ui/layout.rs

@@ -125,7 +125,7 @@ impl Layout {
     }
 
     fn get_current_screen(&self) -> Option<&Screen> {
-        if self.stack.len() > 0 {
+        if !self.stack.is_empty() {
             return self.stack.last();
         }
 
@@ -137,7 +137,7 @@ impl Layout {
     }
 
     fn get_current_screen_mut(&mut self) -> Option<&mut Screen> {
-        if self.stack.len() > 0 {
+        if !self.stack.is_empty() {
             return self.stack.last_mut();
         }
 
@@ -155,7 +155,7 @@ impl View for Layout {
 
         let cmdline_visible = self.cmdline.get_content().len() > 0;
         let mut cmdline_height = if cmdline_visible { 1 } else { 0 };
-        if result.as_ref().map(|o| o.is_some()).unwrap_or(true) {
+        if result.as_ref().map(Option::is_some).unwrap_or(true) {
             cmdline_height += 1;
         }
 
@@ -165,7 +165,7 @@ impl View for Layout {
                 let offset = HAlign::Center.get_offset(screen.title.width(), printer.size.x);
                 printer.print((offset, 0), &screen.title);
 
-                if self.stack.len() > 0 {
+                if !self.stack.is_empty() {
                     printer.print((1, 0), "<");
                 }
             });
@@ -215,7 +215,7 @@ impl View for Layout {
 
             let cmdline_visible = self.cmdline.get_content().len() > 0;
             let mut cmdline_height = if cmdline_visible { 1 } else { 0 };
-            if result.as_ref().map(|o| o.is_some()).unwrap_or(true) {
+            if result.as_ref().map(Option::is_some).unwrap_or(true) {
                 cmdline_height += 1;
             }
 

src/ui/listview.rs

@@ -354,7 +354,7 @@ impl<I: ListItem + Clone> ViewExt for ListView<I> {
             if let Some(item) = content.get_mut(self.selected) {
                 let queue = self.queue.clone();
                 let library = self.library.clone();
-                let arg = args.get(0).map(|s| s.clone()).unwrap_or_default();
+                let arg = args.get(0).cloned().unwrap_or_default();
 
                 if arg == "album" {
                     if let Some(album) = item.album(queue.clone()) {