signal: Ctrl+C example: highlight power of Stream::for_each()

examples/ctrl-c/src/main.rs

@@ -16,13 +16,18 @@ fn main() {
 
     println!("This program is now waiting for you to press Ctrl+C");
 
+    // for_each is a powerful primitive provided by the Futures crate
+    // it turns a Stream into a Future that completes after all stream-items
+    // have been completed.
+    let future = stream.for_each(|()| {
+        println!("Ctrl+C received!");
+        Ok(())
+    });
+
     // Up until now, we haven't really DONE anything, just prepared
     // now it's time to actually schedule, and thus execute, the stream
     // on our event loop
-    core.run(stream.for_each(|()| {
+    core.run(future).unwrap();
-        println!("Ctrl-C received!");
-        Ok(())
-    })).unwrap();
 
     println!("this won't be printed, because the received Ctrl+C will also kill the program");
     unreachable!();