chore: Clean up some formatting in exercises

exercises/modules/modules2.rs

@@ -17,9 +17,11 @@ mod delicious_snacks {
 }
 
 fn main() {
-    println!("favorite snacks: {} and {}",
+    println!(
+        "favorite snacks: {} and {}",
         delicious_snacks::fruit,
-             delicious_snacks::veggie);
+        delicious_snacks::veggie
+    );
 }
 
 

exercises/move_semantics/move_semantics1.rs

@@ -11,7 +11,6 @@ fn main() {
     vec1.push(88);
 
     println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
-
 }
 
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {

exercises/move_semantics/move_semantics2.rs

@@ -12,7 +12,6 @@ fn main() {
     vec1.push(88);
 
     println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
-
 }
 
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {

exercises/move_semantics/move_semantics3.rs

@@ -13,7 +13,6 @@ fn main() {
     vec1.push(88);
 
     println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
-
 }
 
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {

exercises/move_semantics/move_semantics4.rs

@@ -13,7 +13,6 @@ fn main() {
     vec1.push(88);
 
     println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
-
 }
 
 // `fill_vec()` no longer take `vec: Vec<i32>` as argument

exercises/standard_library_types/arc1.rs

@@ -13,8 +13,7 @@ fn main() {
     let mut joinhandles = Vec::new();
 
     for offset in 0..8 {
-        joinhandles.push(
+        joinhandles.push(thread::spawn(move || {
-        thread::spawn(move || {
             let mut i = offset;
             let mut sum = 0;
             while i < child_numbers.len() {

exercises/standard_library_types/iterators3.rs

@@ -23,8 +23,7 @@ pub struct NotDivisibleError {
 // This function should calculate `a` divided by `b` if `a` is
 // evenly divisible by b.
 // Otherwise, it should return a suitable error.
-pub fn divide(a: i32, b: i32) -> Result<i32, DivisionError> {
+pub fn divide(a: i32, b: i32) -> Result<i32, DivisionError> {}
-}
 
 #[cfg(test)]
 mod tests {

exercises/test3.rs

@@ -7,8 +7,12 @@
 // you think each value is. That is, add either `string_slice` or `string`
 // before the parentheses on each line. If you're right, it will compile!
 
-fn string_slice(arg: &str) { println!("{}", arg); }
+fn string_slice(arg: &str) {
-fn string(arg: String) { println!("{}", arg); }
+    println!("{}", arg);
+}
+fn string(arg: String) {
+    println!("{}", arg);
+}
 
 fn main() {
     ("blue");