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-rw-r--r--rustlings/solutions/12_options/options3.rs27
1 files changed, 25 insertions, 2 deletions
diff --git a/rustlings/solutions/12_options/options3.rs b/rustlings/solutions/12_options/options3.rs
index dcf2377..c918f71 100644
--- a/rustlings/solutions/12_options/options3.rs
+++ b/rustlings/solutions/12_options/options3.rs
@@ -1,4 +1,27 @@
+#[derive(Debug)]
+struct Point {
+ x: i32,
+ y: i32,
+}
+
fn main() {
- // DON'T EDIT THIS SOLUTION FILE!
- // It will be automatically filled after you finish the exercise.
+ 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!("Coordinates are {},{}", p.x, p.y),
+ // ^^^ added
+ _ => panic!("No match!"),
+ }
+
+ // Solution 2: Matching over a reference (`&Option`) by added `&` before
+ // `optional_point`.
+ match &optional_point {
+ //^ added
+ Some(p) => println!("Coordinates are {},{}", p.x, p.y),
+ _ => panic!("No match!"),
+ }
+
+ println!("{optional_point:?}");
}