Move is the default in Rust

src/main.rs

@@ -1,14 +1,23 @@
-fn add_10(value: Option<u32>) -> Result<u32, String> {
-    match value {
-        Some(v) => Ok(v + 10),
-        None => Err(String::from("value was empty")),
+struct Vector3 {
+    x: f32,
+    y: f32,
+    z: f32,
+}
+
+impl Vector3 {
+    pub fn new(x: f32, y: f32, z: f32) -> Vector3 {
+        Vector3 { x, y, z }
     }
 }
 
-fn main() {
-    let value = add_10(None);
-
-    println!("Result is: {}", value.unwrap_or(42));
-
-    panic!("Non recoverable error.");
+fn print(vec: Vector3) {
+    println!("Vector3( x = {}, y = {}, z = {})", vec.x, vec.y, vec.z);
+}
+
+fn main() {
+    let mut vec = Vector3::new(1.0, 0.0, 0.0);
+
+    print(vec);
+
+    vec.y = 2.0;
 }