Much more flow control destructuring in RBE

rustbyexample/flow_control.d/match.d/destructuring.d/destructure_pointers.rs

@@ -0,0 +1,29 @@
+fn main() {
+    let reference = &4;
+
+    match reference {
+        &val => println!("Got a value via destructuring: {:?}", val),
+    }
+
+    match *reference {
+        val => println!("Got a value via dereferencing: {:?}", val),
+    }
+
+    let _not_a_reference = 3;
+
+    let ref _is_a_reference = 3;
+
+    let value = 5;
+    let mut mut_value = 6;
+
+    match value {
+        ref r => println!("Got a reference to a value: {:?}", r),
+    }
+
+    match mut_value {
+        ref mut m => {
+            *m += 10;
+            println!("We added 10. `mut_value`: {:?}", m);
+        }
+    }
+}