polish the throw trait

examples/error_handle.rs

@@ -1,4 +1,4 @@
-use dioxus::prelude::*;
+use dioxus::{core::CapturedError, prelude::*};
 
 fn main() {
     dioxus_desktop::launch(App);
@@ -6,30 +6,25 @@ fn main() {
 
 #[component]
 fn App(cx: Scope) -> Element {
-    let val = use_state(cx, || "0.0001");
-
-    let num = match val.parse::<f32>() {
-        Err(_) => return cx.render(rsx!("Parsing failed")),
-        Ok(num) => num,
-    };
-
     cx.render(rsx! {
-        h1 { "The parsed value is {num}" }
-        button {
-            onclick: move |_| val.set("invalid"),
-            "Set an invalid number"
+        ErrorBoundary {
+            handle_error: |error: CapturedError| rsx! {"Found error {error}"},
+            DemoC {
+                x: 1
+            }
         }
-        (0..5).map(|i| rsx! {
-            DemoC { x: i }
-        })
     })
 }
 
 #[component]
 fn DemoC(cx: Scope, x: i32) -> Element {
+    let result = Err("Error");
+
+    result.throw()?;
+
     cx.render(rsx! {
         h1 {
-            "asdasdasdasd {x}"
+            "{x}"
         }
     })
 }