Structs

exercises/structs/structs1.rs

@@ -2,16 +2,15 @@
 // Address all the TODOs to make the tests pass!
 // Execute `rustlings hint structs1` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 struct ColorClassicStruct {
-    // TODO: Something goes here
+    name: String,
+    hex: String,
 }
 
-struct ColorTupleStruct(/* TODO: Something goes here */);
+struct ColorTupleStruct(String, String);
 
 #[derive(Debug)]
-struct UnitLikeStruct;
+struct UnitStruct;
 
 #[cfg(test)]
 mod tests {
@@ -19,30 +18,31 @@ mod tests {
 
     #[test]
     fn classic_c_structs() {
-        // TODO: Instantiate a classic c struct!
+        let green = ColorClassicStruct {
-        // let green =
+            name: String::from("green"),
+            hex: String::from("#00FF00"),
+        };
 
-        assert_eq!(green.red, 0);
+        assert_eq!(green.name, "green");
-        assert_eq!(green.green, 255);
+        assert_eq!(green.hex, "#00FF00");
-        assert_eq!(green.blue, 0);
     }
 
     #[test]
     fn tuple_structs() {
-        // TODO: Instantiate a tuple struct!
+        let green = ColorTupleStruct(
-        // let green =
+            String::from("green"),
+            String::from("#00FF00"),
+        );
 
-        assert_eq!(green.0, 0);
+        assert_eq!(green.0, "green");
-        assert_eq!(green.1, 255);
+        assert_eq!(green.1, "#00FF00");
-        assert_eq!(green.2, 0);
     }
 
     #[test]
     fn unit_structs() {
-        // TODO: Instantiate a unit-like struct!
+        let unit_struct = UnitStruct;
-        // let unit_like_struct =
+        let message = format!("{:?}s are fun!", unit_struct);
-        let message = format!("{:?}s are fun!", unit_like_struct);
 
-        assert_eq!(message, "UnitLikeStructs are fun!");
+        assert_eq!(message, "UnitStructs are fun!");
     }
-}
+}

exercises/structs/structs2.rs

@@ -35,7 +35,11 @@ mod tests {
     fn your_order() {
         let order_template = create_order_template();
         // TODO: Create your own order using the update syntax and template above!
-        // let your_order =
+        let your_order = Order {
+            name: String::from("Hacker in Rust"),
+            count: 1,
+            ..order_template
+        };
         assert_eq!(your_order.name, "Hacker in Rust");
         assert_eq!(your_order.year, order_template.year);
         assert_eq!(your_order.made_by_phone, order_template.made_by_phone);

exercises/structs/structs3.rs

@@ -4,8 +4,6 @@
 // Make the code compile and the tests pass!
 // Execute `rustlings hint structs3` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 #[derive(Debug)]
 struct Package {
     sender_country: String,
@@ -26,12 +24,12 @@ impl Package {
         }
     }
 
-    fn is_international(&self) -> ??? {
+    fn is_international(&self) -> bool {
-        // Something goes here...
+        self.sender_country != self.recipient_country
     }
 
-    fn get_fees(&self, cents_per_gram: i32) -> ??? {
+    fn get_fees(&self, cents_per_gram: i32) -> i32 {
-        // Something goes here...
+        (self.weight_in_grams * cents_per_gram + (1000 / 2)) / 1000
     }
 }
 
@@ -73,7 +71,7 @@ mod tests {
         let sender_country = String::from("Spain");
         let recipient_country = String::from("Spain");
 
-        let cents_per_gram = 3;
+        let cents_per_gram = 3000;
 
         let package = Package::new(sender_country, recipient_country, 1500);