2 files changed, 41 insertions, 4 deletions
diff --git a/rustlings/solutions/14_generics/generics1.rs b/rustlings/solutions/14_generics/generics1.rs
index dcf2377..e2195fd 100644
--- a/rustlings/solutions/14_generics/generics1.rs
+++ b/rustlings/solutions/14_generics/generics1.rs
@@ -1,4 +1,17 @@
+// `Vec<T>` is generic over the type `T`. In most cases, the compiler is able to
+// infer `T`, for example after pushing a value with a concrete type to the vector.
+// But in this exercise, the compiler needs some help through a type annotation.
+
 fn main() {
-    // DON'T EDIT THIS SOLUTION FILE!
-    // It will be automatically filled after you finish the exercise.
+    // `u8` and `i8` can both be converted to `i16`.
+    let mut numbers: Vec<i16> = Vec::new();
+    //             ^^^^^^^^^^ added
+
+    // Don't change the lines below.
+    let n1: u8 = 42;
+    numbers.push(n1.into());
+    let n2: i8 = -1;
+    numbers.push(n2.into());
+
+    println!("{numbers:?}");
 }
diff --git a/rustlings/solutions/14_generics/generics2.rs b/rustlings/solutions/14_generics/generics2.rs
index dcf2377..14f3f7a 100644
--- a/rustlings/solutions/14_generics/generics2.rs
+++ b/rustlings/solutions/14_generics/generics2.rs
@@ -1,4 +1,28 @@
+struct Wrapper<T> {
+    value: T,
+}
+
+impl<T> Wrapper<T> {
+    fn new(value: T) -> Self {
+        Wrapper { value }
+    }
+}
+
 fn main() {
-    // DON'T EDIT THIS SOLUTION FILE!
-    // It will be automatically filled after you finish the exercise.
+    // You can optionally experiment here.
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn store_u32_in_wrapper() {
+        assert_eq!(Wrapper::new(42).value, 42);
+    }
+
+    #[test]
+    fn store_str_in_wrapper() {
+        assert_eq!(Wrapper::new("Foo").value, "Foo");
+    }
 }