diff options
Diffstat (limited to 'meap/meap-code/ch1/ch1-animals-tuple-structs.rs')
| -rw-r--r-- | meap/meap-code/ch1/ch1-animals-tuple-structs.rs | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meap/meap-code/ch1/ch1-animals-tuple-structs.rs b/meap/meap-code/ch1/ch1-animals-tuple-structs.rs new file mode 100644 index 0000000..ed479ed --- /dev/null +++ b/meap/meap-code/ch1/ch1-animals-tuple-structs.rs @@ -0,0 +1,41 @@ +struct Animal {
+ age: i32,
+}
+
+struct Cat(Animal);
+struct Dog(Animal);
+struct LoudDog(Animal);
+
+trait Talk {
+ fn talk(&self) -> ();
+}
+
+impl Talk for Cat {
+ fn talk(&self) {
+ println!("Meow");
+ }
+}
+
+impl Talk for Dog {
+ fn talk(&self) {
+ println!("Woof!");
+ }
+}
+
+impl Talk for LoudDog {
+ fn talk(&self) {
+ println!("WOOF!!");
+ }
+}
+
+
+
+fn main() {
+ let fluffy = Cat(Animal { age: 4 });
+ let max = Dog(Animal { age: 2 });
+ let neighbours_dog = LoudDog(Animal { age: 7 });
+
+ fluffy.talk();
+ max.talk();
+ neighbours_dog.talk();
+}
|