modules2 solution

exercises/10_modules/modules2.rs

@@ -1,20 +1,19 @@
 // You can bring module paths into scopes and provide new names for them with
-// the 'use' and 'as' keywords. Fix these 'use' statements to make the code
-// compile.
+// the `use` and `as` keywords.
 
 mod delicious_snacks {
-    // TODO: Fix these use statements
-    use self::fruits::PEAR as ???
-    use self::veggies::CUCUMBER as ???
+    // TODO: Add the follwing two `use` statements after fixing them.
+    // use self::fruits::PEAR as ???;
+    // use self::veggies::CUCUMBER as ???;
 
     mod fruits {
-        pub const PEAR: &'static str = "Pear";
-        pub const APPLE: &'static str = "Apple";
+        pub const PEAR: &str = "Pear";
+        pub const APPLE: &str = "Apple";
     }
 
     mod veggies {
-        pub const CUCUMBER: &'static str = "Cucumber";
-        pub const CARROT: &'static str = "Carrot";
+        pub const CUCUMBER: &str = "Cucumber";
+        pub const CARROT: &str = "Carrot";
     }
 }
 
@@ -22,6 +21,6 @@ fn main() {
     println!(
         "favorite snacks: {} and {}",
         delicious_snacks::fruit,
-        delicious_snacks::veggie
+        delicious_snacks::veggie,
     );
 }

rustlings-macros/info.toml

@@ -535,12 +535,13 @@ name = "modules2"
 dir = "10_modules"
 test = false
 hint = """
-The delicious_snacks module is trying to present an external interface that is
-different than its internal structure (the `fruits` and `veggies` modules and
-associated constants). Complete the `use` statements to fit the uses in main and
-find the one keyword missing for both constants.
+The `delicious_snacks` module is trying to present an external interface that
+is different than its internal structure (the `fruits` and `veggies` modules
+and associated constants). Complete the `use` statements to fit the uses in
+`main` and find the one keyword missing for both constants.
 
-Learn more at https://doc.rust-lang.org/book/ch07-04-bringing-paths-into-scope-with-the-use-keyword.html#re-exporting-names-with-pub-use"""
+Learn more in The Book:
+https://doc.rust-lang.org/book/ch07-04-bringing-paths-into-scope-with-the-use-keyword.html#re-exporting-names-with-pub-use"""
 
 [[exercises]]
 name = "modules3"

solutions/10_modules/modules2.rs

@@ -1 +1,23 @@
-// Solutions will be available before the stable release. Thank you for testing the beta version 🥰
+mod delicious_snacks {
+    // Added `pub` and used the expected alias after `as`.
+    pub use self::fruits::PEAR as fruit;
+    pub use self::veggies::CUCUMBER as veggie;
+
+    mod fruits {
+        pub const PEAR: &str = "Pear";
+        pub const APPLE: &str = "Apple";
+    }
+
+    mod veggies {
+        pub const CUCUMBER: &str = "Cucumber";
+        pub const CARROT: &str = "Carrot";
+    }
+}
+
+fn main() {
+    println!(
+        "favorite snacks: {} and {}",
+        delicious_snacks::fruit,
+        delicious_snacks::veggie,
+    );
+}