3 files changed, 44 insertions, 52 deletions

diff --git a/exercises/07_structs/structs1.rs b/exercises/07_structs/structs1.rs
index 5fa5821..959c4c6 100644
--- a/exercises/07_structs/structs1.rs
+++ b/exercises/07_structs/structs1.rs
@@ -1,28 +1,24 @@
-// structs1.rs
-//
-// 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
+struct ColorRegularStruct {
+    // TODO: Add the fields that the test `regular_structs` expects.
+    // What types should the fields have? What are the minimum and maximum values for RGB colors?
 }
 
-struct ColorTupleStruct(/* TODO: Something goes here */);
+struct ColorTupleStruct(/* TODO: Add the fields that the test `tuple_structs` expects */);
 
 #[derive(Debug)]
-struct UnitLikeStruct;
+struct UnitStruct;
+
+fn main() {
+    // You can optionally experiment here.
+}
 
 #[cfg(test)]
 mod tests {
     use super::*;
 
     #[test]
-    fn classic_c_structs() {
-        // TODO: Instantiate a classic c struct!
+    fn regular_structs() {
+        // TODO: Instantiate a regular struct.
         // let green =
 
         assert_eq!(green.red, 0);
@@ -32,7 +28,7 @@ mod tests {
 
     #[test]
     fn tuple_structs() {
-        // TODO: Instantiate a tuple struct!
+        // TODO: Instantiate a tuple struct.
         // let green =
 
         assert_eq!(green.0, 0);
@@ -42,10 +38,10 @@ mod tests {
 
     #[test]
     fn unit_structs() {
-        // TODO: Instantiate a unit-like struct!
-        // let unit_like_struct =
-        let message = format!("{:?}s are fun!", unit_like_struct);
+        // TODO: Instantiate a unit struct.
+        // let unit_struct =
+        let message = format!("{unit_struct:?}s are fun!");
 
-        assert_eq!(message, "UnitLikeStructs are fun!");
+        assert_eq!(message, "UnitStructs are fun!");
     }
 }
diff --git a/exercises/07_structs/structs2.rs b/exercises/07_structs/structs2.rs
index 328567f..79141af 100644
--- a/exercises/07_structs/structs2.rs
+++ b/exercises/07_structs/structs2.rs
@@ -1,12 +1,3 @@
-// structs2.rs
-//
-// Address all the TODOs to make the tests pass!
-//
-// Execute `rustlings hint structs2` or use the `hint` watch subcommand for a
-// hint.
-
-// I AM NOT DONE
-
 #[derive(Debug)]
 struct Order {
     name: String,
@@ -30,6 +21,10 @@ fn create_order_template() -> Order {
     }
 }
 
+fn main() {
+    // You can optionally experiment here.
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -37,8 +32,10 @@ mod tests {
     #[test]
     fn your_order() {
         let order_template = create_order_template();
+
         // TODO: Create your own order using the update syntax and template above!
         // let your_order =
+
         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);
diff --git a/exercises/07_structs/structs3.rs b/exercises/07_structs/structs3.rs
index 7cda5af..93b57fe 100644
--- a/exercises/07_structs/structs3.rs
+++ b/exercises/07_structs/structs3.rs
@@ -1,13 +1,5 @@
-// structs3.rs
-//
 // Structs contain data, but can also have logic. In this exercise we have
-// defined the Package struct and we want to test some logic attached to it.
-// 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
+// defined the `Package` struct and we want to test some logic attached to it.
 
 #[derive(Debug)]
 struct Package {
@@ -17,29 +9,36 @@ struct Package {
 }
 
 impl Package {
-    fn new(sender_country: String, recipient_country: String, weight_in_grams: u32) -> Package {
+    fn new(sender_country: String, recipient_country: String, weight_in_grams: u32) -> Self {
         if weight_in_grams < 10 {
-            // This is not how you should handle errors in Rust,
-            // but we will learn about error handling later.
-            panic!("Can not ship a package with weight below 10 grams.")
-        } else {
-            Package {
-                sender_country,
-                recipient_country,
-                weight_in_grams,
-            }
+            // This isn't how you should handle errors in Rust, but we will
+            // learn about error handling later.
+            panic!("Can't ship a package with weight below 10 grams");
+        }
+
+        Self {
+            sender_country,
+            recipient_country,
+            weight_in_grams,
         }
     }
 
-    fn is_international(&self) -> ??? {
-        // Something goes here...
+    // TODO: Add the correct return type to the function signature.
+    fn is_international(&self) {
+        // TODO: Read the tests that use this method to find out when a package
+        // is considered international.
     }
 
-    fn get_fees(&self, cents_per_gram: u32) -> ??? {
-        // Something goes here...
+    // TODO: Add the correct return type to the function signature.
+    fn get_fees(&self, cents_per_gram: u32) {
+        // TODO: Calculate the package's fees.
     }
 }
 
+fn main() {
+    // You can optionally experiment here.
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;