options3 solution

exercises/12_options/options3.rs

@@ -1,14 +1,17 @@
+#[derive(Debug)]
 struct Point {
     x: i32,
     y: i32,
 }
 
 fn main() {
-    let y: Option<Point> = Some(Point { x: 100, y: 200 });
+    let optional_point = Some(Point { x: 100, y: 200 });
 
-    match y {
+    // TODO: Fix the compiler error by adding something to this match statement.
-        Some(p) => println!("Co-ordinates are {},{} ", p.x, p.y),
+    match optional_point {
-        _ => panic!("no match!"),
+        Some(p) => println!("Co-ordinates are {},{}", p.x, p.y),
+        _ => panic!("No match!"),
     }
-    y; // Fix without deleting this line.
+
+    println!("{optional_point:?}"); // Don't change this line.
 }

rustlings-macros/info.toml

@@ -631,7 +631,8 @@ hint = """
 The compiler says a partial move happened in the `match` statement. How can
 this be avoided? The compiler shows the correction needed.
 
-After making the correction as suggested by the compiler, do read:
+After making the correction as suggested by the compiler, read the related docs
+page:
 https://doc.rust-lang.org/std/keyword.ref.html"""
 
 # ERROR HANDLING

solutions/12_options/options3.rs

@@ -1 +1,26 @@
-// Solutions will be available before the stable release. Thank you for testing the beta version 🥰
+#[derive(Debug)]
+struct Point {
+    x: i32,
+    y: i32,
+}
+
+fn main() {
+    let optional_point = Some(Point { x: 100, y: 200 });
+
+    // Solution 1: Matching over the `Option` (not `&Option`) but without moving
+    // out of the `Some` variant.
+    match optional_point {
+        Some(ref p) => println!("Co-ordinates are {},{}", p.x, p.y),
+        //   ^^^ added
+        _ => panic!("No match!"),
+    }
+
+    // Solution 2: Matching over a reference (`&Option`) by added `&` before
+    // `optional_point`.
+    match &optional_point {
+        Some(p) => println!("Co-ordinates are {},{}", p.x, p.y),
+        _ => panic!("No match!"),
+    }
+
+    println!("{optional_point:?}");
+}