Example with ownership

src/main.rs

@@ -69,19 +69,23 @@ impl<'a> Container<'a> {
     }
 }
 
-fn foo<'a>(image: Image) -> Container<'a> {
+fn brighter<'a>(a: &'a RGB, b: &'a RGB) -> &'a RGB {
-    Container::new(image.get(0, 0))
+    if a.red / 3 + a.green / 3 + a.blue / 3 > b.red / 3 + b.green / 3 + b.blue / 3 {
+        a
+    } else {
+        b
+    }
 }
 
 fn main() {
     let image = Image::white_image(640, 480);
 
-    let c = image.get(0, 0);
+    let black = RGB::black();
 
-    let container = Container::new(c);
+    let c1 = image.get(0, 0);
+    //let c2 = image.get(1, 1);
 
-    let container1 = foo(image);
+    let brightest = brighter(c1, &black);
 
-    println!("{}", container.value.blue);
+    println!("{}", brightest.red);
-    println!("{}", container1.value.blue);
 }