Merge remote-tracking branch 'upstream/main' into fix-enum-variant-inconsistency

1 files changed, 17 insertions, 0 deletions

diff --git a/solutions/14_generics/generics1.rs b/solutions/14_generics/generics1.rs
new file mode 100644
index 0000000..e2195fd
--- /dev/null
+++ b/solutions/14_generics/generics1.rs
@@ -0,0 +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() {
+    // `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:?}");
+}