Refactor: use filter_map when iterating over stored IDs and

Author: BastiDood

crates/vfs/src/lib.rs

@@ -139,13 +139,12 @@ impl Vfs {
     ///
     /// This will skip deleted files.
     pub fn iter(&self) -> impl Iterator<Item = (FileId, &VfsPath)> + '_ {
-        (0..self.data.len())
-            .map(|it| FileId(it as u32))
-            .filter(move |&file_id| self.get(file_id).is_some())
-            .map(move |file_id| {
-                let path = self.interner.lookup(file_id);
-                (file_id, path)
-            })
+        (0..self.data.len()).filter_map(move |it| {
+            let file_id = FileId(it as u32);
+            let _ = self.get(file_id).as_ref()?;
+            let path = self.interner.lookup(file_id);
+            Some((file_id, path))
+        })
     }
 
     /// Update the `path` with the given `contents`. `None` means the file was deleted.