cargo fix

Author: rootulp

rust/collatz-conjecture/src/lib.rs

@@ -2,7 +2,7 @@ pub fn collatz(n: u64) -> Option<u64> {
     if n == 0 {
         return None;
     }
-    return Some(num_steps(n, 0));
+    Some(num_steps(n, 0))
 }
 
 fn num_steps(n: u64, steps: u64) -> u64 {
@@ -12,9 +12,9 @@ fn num_steps(n: u64, steps: u64) -> u64 {
     if is_even(n) {
         return num_steps(n / 2, steps + 1);
     }
-    return num_steps((3 * n) + 1, steps + 1);
+    num_steps((3 * n) + 1, steps + 1)
 }
 
 fn is_even(n: u64) -> bool {
-    return n % 2 == 0;
+    n % 2 == 0
 }

rust/grade-school/src/lib.rs

@@ -37,7 +37,7 @@ impl<'a> School<'a> {
     }
 }
 
-impl<'a> Default for School<'a> {
+impl Default for School<'_> {
     fn default() -> Self {
         Self::new()
     }

rust/high-scores/src/lib.rs

@@ -13,11 +13,11 @@ impl<'a> HighScores<'a> {
     }
 
     pub fn latest(&self) -> Option<u32> {
-        return self.scores.last().copied();
+        self.scores.last().copied()
     }
 
     pub fn personal_best(&self) -> Option<u32> {
-        return self.scores.iter().max().copied();
+        self.scores.iter().max().copied()
     }
 
     pub fn personal_top_three(&self) -> Vec<u32> {

rust/minesweeper/src/lib.rs

@@ -35,21 +35,21 @@ impl Board {
     }
 
     fn annotate(&self) -> Vec<String> {
-        return self
+        self
             .field
             .iter()
             .enumerate()
             .map(|(row, _)| self.annotate_row(row))
-            .collect();
+            .collect()
     }
 
     fn annotate_row(&self, y: usize) -> String {
         let row = &self.field[y];
-        return row
+        row
             .iter()
             .enumerate()
             .map(|(x, _)| self.annotate_location(y, x))
-            .collect();
+            .collect()
     }
 
     fn annotate_location(&self, y: usize, x: usize) -> char {
@@ -68,11 +68,11 @@ impl Board {
     }
 
     fn num_neighbor_mines(&self, y: u32, x: u32) -> usize {
-        return self
+        self
             .get_neighbors(y, x)
             .iter()
             .filter(|neighbor| neighbor == &&&Token::Mine)
-            .count();
+            .count()
     }
 
     fn get_neighbors(&self, y: u32, x: u32) -> Vec<&Token> {

rust/rna-transcription/src/lib.rs

@@ -29,7 +29,7 @@ impl Dna {
 
         let mut converted = String::new();
 
-        for (_, c) in self.contents.chars().enumerate() {
+        for c in self.contents.chars() {
             converted.push(*complements.get(&c).unwrap())
         }