feat: omg what a dumb mistake

examples/coroutine.rs

@@ -0,0 +1,71 @@
+//! Example: Coroutines!
+//! --------------------
+//!
+//! Coroutines are an awesome way to write concurrent code. Dioxus heavily leverages coroutines to make sense of complex
+//! ongoing asynchronous tasks. The async scheduler of Dioxus supports both single-threaded and multi-threaded coroutines,
+//! so you can drop in code to run across multiple threads without blocking the main thread.
+//!
+//! Dioxus cannot simply abstract away the threading model for the web, unfortunately. If you want to use "web threads"
+//! you either need to limit support for Chrome, or you need to use a Web Workers and message passing. This is easy enough
+//! to do in your own code, and doesn't require 1st-party support from Dioxus itself.
+//!
+//! UseState and friends work fine with coroutines, but coroutines might be easier to use with the Dirac global state
+//! management API. This lets you easily drive global state from a coroutine without having to subscribe to the state.
+//!
+//! For now, this example shows how to use coroutines used with use_state.
+//!
+//!
+//! ## What is a Couroutine?
+//!
+//! A coroutine is a function that can be paused and resumed. It can be paused internally through "await" or externally
+//! using the `TaskHandle` API. Within a coroutine, you may execute asynchonous code, that modifies values captured when
+//! the coroutine was initiated. `use_state` always returns the same setter, so you don't need to worry about
+
+fn main() {
+    dioxus::desktop::launch(App, |c| c);
+}
+
+use dioxus::prelude::*;
+
+static App: FC<()> = |cx| {
+    let p1 = use_state(cx, || 0);
+    let p2 = use_state(cx, || 0);
+
+    let (mut p1_async, mut p2_async) = (p1.for_async(), p2.for_async());
+    let (p1_handle, _) = cx.use_task(|| async move {
+        loop {
+            *p1_async.get_mut() += 1;
+            async_std::task::sleep(std::time::Duration::from_millis(75)).await;
+        }
+    });
+    let (p2_handle, _) = cx.use_task(|| async move {
+        loop {
+            *p2_async.get_mut() += 1;
+            async_std::task::sleep(std::time::Duration::from_millis(100)).await;
+        }
+    });
+
+    cx.render(rsx! {
+        div { style: { width: "400px", height: "400px", position: "relative", background: "yellow" }
+            button { "reset", onclick: move |_| {} }
+            Horsey { pos: *p1, "horsey 1" }
+            Horsey { pos: *p2, "horsey 2" }
+        }
+    })
+};
+
+#[derive(PartialEq, Props)]
+struct HorseyProps {
+    pos: i32,
+}
+
+static Horsey: FC<HorseyProps> = |cx| {
+    cx.render(rsx! {
+    div {
+        button { "pause" }
+        div {
+            {cx.children()}
+        }
+      }
+    })
+};