Fixed clippy lints

Author: Heliozoa

plugins/csharp/src/plugin.rs

@@ -358,8 +358,7 @@ impl LanguagePlugin for CSharpPlugin {
             |points| {
                 points
                     .into_iter()
-                    .map(|p| p.split_whitespace())
-                    .flatten()
+                    .flat_map(|p| p.split_whitespace())
                     .collect()
             },
         )(i)

plugins/java/src/java_plugin.rs

@@ -276,8 +276,7 @@ pub(crate) trait JavaPlugin: LanguagePlugin {
             |points| {
                 points
                     .into_iter()
-                    .map(|p| p.split_whitespace())
-                    .flatten()
+                    .flat_map(|p| p.split_whitespace())
                     .collect()
             },
         )(i)

plugins/python3/src/plugin.rs

@@ -467,8 +467,7 @@ impl LanguagePlugin for Python3Plugin {
             |points| {
                 points
                     .into_iter()
-                    .map(|p| p.split_whitespace())
-                    .flatten()
+                    .flat_map(|p| p.split_whitespace())
                     .collect()
             },
         )(i)

tmc-langs/src/config/projects_config.rs

@@ -94,8 +94,7 @@ impl ProjectsConfig {
     pub fn get_all_exercises(&self) -> impl Iterator<Item = &ProjectsDirExercise> {
         self.courses
             .iter()
-            .map(|c| &c.1.exercises)
-            .flatten()
+            .flat_map(|c| &c.1.exercises)
             .map(|e| e.1)
     }
 

tmc-langs/src/course_refresher.rs

@@ -187,7 +187,7 @@ fn initialize_new_cache_clone(
             file_util::copy(old_clone_path, new_course_root)?;
 
             let run_git = |args: &[&str]| {
-                TmcCommand::piped("git".to_string())
+                TmcCommand::piped("git")
                     .with(|e| e.cwd(new_clone_path).args(args))
                     .output_with_timeout_checked(Duration::from_secs(60 * 2))
             };
@@ -215,7 +215,7 @@ fn initialize_new_cache_clone(
     log::info!("could not copy from previous cache, cloning");
 
     // clone_repository
-    TmcCommand::piped("git".to_string())
+    TmcCommand::piped("git")
         .with(|e| {
             e.args(&["clone", "-q", "-b"])
                 .arg(course_git_branch)
@@ -304,7 +304,7 @@ fn get_exercises(
                 "processing points and checksum for {}",
                 exercise_dir.display()
             );
-            let name = exercise_dir.to_string_lossy().replace("/", "-");
+            let name = exercise_dir.to_string_lossy().replace('/', "-");
             let checksum = calculate_checksum(&course_stub_path.join(&exercise_dir))?;
             let exercise_path = course_clone_path.join(&exercise_dir);
             let points = super::get_available_points(&exercise_path)?;

tmc-langs/src/lib.rs

@@ -593,8 +593,7 @@ pub fn update_exercises(
     let exercise_ids = projects_config
         .courses
         .iter_mut()
-        .map(|c| &mut c.1.exercises)
-        .flatten()
+        .flat_map(|c| &mut c.1.exercises)
         .map(|e| e.1.id)
         .collect::<Vec<_>>();