class-3-exercises-submit1

exercises/complex-type/src/enums.rs

@@ -1,18 +1,19 @@
 // Exercise 1
 // Fill in the blank and fix the errors
 // Make it compile
+#[derive(Debug)]
 enum MessageOne {
     Quit,
     Move { x: i32, y: i32 },
     Write(String),
     ChangeColor(i32, i32, i32),
 }
 fn show_message(msg: MessageOne) {
-    println!("{}", msg);
+    println!("{:?}", msg);
 }
 
 fn exercise1() {
-    let msgs: __ = [
+    let msgs = [
         MessageOne::Quit,
         MessageOne::Move { x: 1, y: 3 },
         MessageOne::ChangeColor(255, 255, 0),
@@ -29,6 +30,10 @@ fn exercise1() {
 // Run tests
 enum Message {
     // TODO: implement the message variant types based on their usage below
+    ChangeColor(u8, u8, u8),
+    Echo(String),
+    Move(Point),
+    Quit
 }
 
 struct Point {
@@ -60,6 +65,12 @@ impl State {
     }
 
     fn process(&mut self, message: Message) {
+        match message {
+            Message::ChangeColor(a,b ,c ) => self.change_color((a, b, c)),
+            Message::Echo(s) => self.echo(s),
+            Message::Move(p) => self.move_position(p),
+            Message::Quit => self.quit(),
+        }
         // TODO: create a match expression to process the different message variants
         // Remember: When passing a tuple as a function argument, you'll need extra parentheses: fn function((t, u, p, l, e))
     }
@@ -69,6 +80,7 @@ impl State {
 // Exercise 3
 // Fix the errors
 // Run tests
+#[derive(Debug, PartialEq)]
 enum Direction {
     North,
     East,
@@ -79,7 +91,10 @@ enum Direction {
 impl Direction {
     fn opposite(&self) -> Direction {
         match self {
-            //TODO
+            Direction::North => Direction::South,
+            Direction::East => Direction::West,
+            Direction::West => Direction::East,
+            Direction::South => Direction::North,
         }
     }
 }
@@ -99,7 +114,10 @@ enum Operation {
 // Perform arithmetic operations
 fn perform_operation(operation: Operation, num1: f64, num2: f64) -> f64 {
     match operation {
-        // TODO
+        Operation::Add => num1 + num2,
+        Operation::Subtract => num1 - num2,
+        Operation::Divide => num1 / num2,
+        Operation::Multiply => num1 * num2,
     }
 }
 

exercises/complex-type/src/structs.rs

@@ -2,11 +2,21 @@
 // Fix the error
 // Make it compile
 // Run test
+#[derive(Debug)]
 struct Person {
     name: String,
     age: u8,
     hobby: String
 }
+impl PartialEq for Person
+{
+    fn eq(&self, other: &Self) -> bool {
+        if self.name == other.name && self.age == other.age && self.hobby == other.hobby {
+            return true;
+        }
+        false
+    }
+}
 fn exercise1() -> Person {
     let age = 30;
     // Hobby = Rust 
@@ -33,18 +43,18 @@ struct Agent  {
 // Implementation of methods for the Person struct
 impl Agent {
     // Create a new Person instance
-    fn new(name: String, age: u32) -> Agent {
-        Agent { name, age }
+    fn new(name: String, age: u32) -> Self {
+        Self { name, age }
     }
 
     // Get the name of the person
-    fn get_name(&self) -> &str {
-        todo!()
+    fn get_name(&self) -> String {
+        self.name.to_string()
     }
 
     // Get the age of the person
     fn get_age(&self) -> u32 {
-        todo!()
+        self.age
     }
 }
 
@@ -58,28 +68,28 @@ struct Calculator {
 
 impl Calculator {
     fn new() -> Self {
-        Calculator { value: 0 }
+        Self { value: 0 }
     }
 
-    fn add(&self, num: i32) {
+    fn add(&mut self, num: i32) {
         self.value += num;
     }
 
-    fn subtract(mut self, num: i32) {
+    fn subtract(&mut self, num: i32) {
         self.value -= num;
     }
-    fn clear(self) {
+    fn clear(&mut self) {
         self.value = 0;
     }
 
-    fn get_value(self) -> i32 {
+    fn get_value(&self) -> i32 {
         self.value
     }
 }
 
 // Exercise 4
 // Make it compile
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 struct User {
     first: String,
     last: String,
@@ -95,7 +105,7 @@ fn exercise4() {
 
     let u2 = User {
         first: String::from("Mary"),
-        ..u1
+        ..u1.clone()
 
     };
 
@@ -122,10 +132,10 @@ fn exercise5() {
     });
 
 
-    let moved = foos[0];
+    let moved = &foos[0];
 
 
-    let moved_field = foos[0].str_val;
+    let moved_field = &foos[0].str_val;
 }
 
 // Exercise 6
@@ -153,12 +163,12 @@ impl Package {
         }
     }
 
-    fn is_international(&self) -> ??? {
-        // Something goes here...
+    fn is_international(&self) -> bool {
+        !self.sender_country.eq_ignore_ascii_case(self.recipient_country.as_str())
     }
 
-    fn get_fees(&self, cents_per_gram: i32) -> ??? {
-        // Something goes here...
+    fn get_fees(&self, cents_per_gram: i32) -> i32 {
+        self.weight_in_grams * cents_per_gram
     }
 }
 
@@ -177,6 +187,9 @@ mod tests {
             hobby:String::from("Rust") 
         };
         assert_eq!(p, p_expectation);
+        // assert_eq!(p.name, p_expectation.name);
+        // assert_eq!(p.age, p_expectation.age);
+        // assert_eq!(p.hobby, p_expectation.hobby);
 
     }