format code in md

solutions/generics-traits/advanced-trait.md

@@ -1,4 +1,5 @@
 1.
+
 ```rust
 struct Container(i32, i32);
 
@@ -53,6 +54,7 @@ fn main() {
 ```
 
 2.
+
 ```rust
 impl<T: Sub<Output = T>> Sub<Point<T>> for Point<T> {
     type Output = Self;
@@ -93,6 +95,7 @@ impl<T: Sub<Output = T>> Sub for Point<T> {
 ```
 
 3.
+
 ```rust
 trait Pilot {
     fn fly(&self) -> String;
@@ -134,6 +137,7 @@ fn main() {
 ```
 
 4.
+
 ```rust
 trait Person {
     fn name(&self) -> String;
@@ -209,6 +213,7 @@ fn main() {
 ```
 
 5.
+
 ```rust
 use std::fmt;
 

solutions/generics-traits/const-generics.md

@@ -1,4 +1,5 @@
 1.
+
 ```rust
 struct Array<T, const N: usize> {
     data : [T; N]
@@ -20,6 +21,7 @@ fn main() {
 ```
 
 2.
+
 ```rust
 fn print_array<T: std::fmt::Debug, const N: usize>(arr: [T; N]) {
     println!("{:?}", arr);
@@ -33,7 +35,8 @@ fn main() {
 }
 ```
 
-3. 
+3.
+
 ```rust
 #![allow(incomplete_features)]
 #![feature(generic_const_exprs)]

solutions/generics-traits/generics.md

@@ -1,4 +1,5 @@
 1.
+
 ```rust
 struct A;          // Concrete type `A`.
 struct S(A);       // Concrete type `S`.
@@ -27,6 +28,7 @@ fn main() {
 ```
 
 2.
+
 ```rust
 fn sum<T:std::ops::Add<Output = T>>(x: T, y: T) -> T {
     x + y
@@ -39,8 +41,8 @@ fn main() {
 }
 ```
 
-
 3.
+
 ```rust
 struct Point<T> {
     x: T,
@@ -54,6 +56,7 @@ fn main() {
 ```
 
 4.
+
 ```rust
 // modify this struct to make the code work
 struct Point<T, U> {
@@ -68,6 +71,7 @@ fn main() {
 ```
 
 5.
+
 ```rust
 struct Val<T> {
     val: T,
@@ -88,6 +92,7 @@ fn main() {
 ```
 
 6.
+
 ```rust
 struct Point<T, U> {
     x: T,
@@ -115,6 +120,7 @@ fn main() {
 ```
 
 7.
+
 ```rust
 struct Point<T> {
     x: T,

solutions/generics-traits/trait-object.md

@@ -1,4 +1,5 @@
 1.
+
 ```rust
 trait Bird {
     fn quack(&self) -> String;
@@ -58,6 +59,7 @@ fn hatch_a_bird(species: u8) ->Box<dyn Bird> {
 ```
 
 2.
+
 ```rust
 trait Bird {
     fn quack(&self);
@@ -101,6 +103,7 @@ fn main() {
 ```
 
 3.
+
 ```rust
 trait Draw {
     fn draw(&self) -> String;
@@ -139,6 +142,7 @@ fn draw_with_ref(x: &dyn Draw) {
 ```
 
 4.
+
 ```rust
 trait Foo {
     fn method(&self) -> String;
@@ -174,6 +178,7 @@ fn main() {
 ```
 
 5.
+
 ```rust
 trait MyTrait {
     fn f(&self) -> Self;

solutions/generics-traits/traits.md

@@ -1,4 +1,5 @@
 1.
+
 ```rust
 trait Hello {
     fn say_hi(&self) -> String {
@@ -37,6 +38,7 @@ fn main() {
 ```
 
 2.
+
 ```rust
 // `Centimeters`, a tuple struct that can be compared
 #[derive(PartialEq, PartialOrd)]
@@ -84,6 +86,7 @@ fn main() {
 ```
 
 3.
+
 ```rust
 use std::ops;
 
@@ -101,6 +104,7 @@ fn main() {
 ```
 
 4.
+
 ```rust
 use std::ops;
 
@@ -141,6 +145,7 @@ fn main() {
 ```
 
 5.
+
 ```rust
 // implement `fn summary` to make the code work
 // fix the errors without removing any code line
@@ -197,6 +202,7 @@ fn summary(t: &impl Summary) {
 ```
 
 6.
+
 ```rust
 struct Sheep {}
 struct Cow {}
@@ -272,6 +278,7 @@ fn main() {
 ```
 
 7.
+
 ```rust
 fn main() {
     assert_eq!(sum(1, 2), 3);
@@ -298,6 +305,7 @@ where
 ```
 
 8.
+
 ```rust
 struct Pair<T> {
     x: T,
@@ -337,6 +345,7 @@ fn main() {
 ```
 
 9.
+
 ```rust
 fn example1() {
     // `T: Trait` is the commonly used way