added patmove example

Author: BartMassey

README.md

@@ -18,3 +18,4 @@ in a controlled repository now.
 * `modules`: example of modules
 * `point.rs`: example of "methods" and ownership
 * `units.rs`: example of newtype and deriving
+* `patmove.rs`: example of `ref` in patterns

patmove.rs

@@ -0,0 +1,18 @@
+struct Foo {
+    tuple: (String, u64),
+}
+
+impl Foo {
+    fn is_hello(&self) -> bool {
+        match self.tuple {
+            (ref s, _) => {
+                s == "hello"
+            }
+        }
+    }
+}
+
+fn main() {
+    let t = Foo { tuple: ("hello".to_string(), 1) };
+    println!("{}", t.is_hello());
+}