Implement effects using reactivecontext

examples/readme.rs

@@ -7,8 +7,23 @@ fn main() {
 fn app() -> Element {
     let mut count = use_signal(|| 0);
 
+    use_effect(move || {
+        println!("The count is now: {}", count);
+    });
+
     rsx! {
+        h1 { "High-Five counter: {count}" }
+        Child { sig: count }
         button { onclick: move |_| count += 1, "Up high!" }
         button { onclick: move |_| count -= 1, "Down low!" }
     }
 }
+
+#[component]
+fn Child(sig: Signal<i32>) -> Element {
+    let doubled = use_memo(move || sig() * 2);
+
+    rsx! {
+        "The count is: {sig}, doubled: {doubled}"
+    }
+}