Add Application::Executor associated type

futures/src/executor/async_std.rs

@@ -0,0 +1,15 @@
+use crate::Executor;
+
+use futures::Future;
+
+pub struct AsyncStd;
+
+impl Executor for AsyncStd {
+    fn new() -> Result<Self, futures::io::Error> {
+        Ok(Self)
+    }
+
+    fn spawn(&self, future: impl Future<Output = ()> + Send + 'static) {
+        let _ = async_std::task::spawn(future);
+    }
+}