Update select example to use Receiver.triggered

Signed-off-by: Sahas Subramanian <[email protected]>

Author: shsms

src/frequenz/channels/_select.py

@@ -376,14 +376,14 @@ async def select(  # noqa: DOC503
         import datetime
         from typing import assert_never
 
-        from frequenz.channels import ReceiverStoppedError, select, selected_from
+        from frequenz.channels import ReceiverStoppedError, select
         from frequenz.channels.timer import SkipMissedAndDrift, Timer, TriggerAllMissed
 
         timer1 = Timer(datetime.timedelta(seconds=1), TriggerAllMissed())
         timer2 = Timer(datetime.timedelta(seconds=0.5), SkipMissedAndDrift())
 
         async for selected in select(timer1, timer2):
-            if selected_from(selected, timer1):
+            if timer1.triggered(selected):
                 # Beware: `selected.message` might raise an exception, you can always
                 # check for exceptions with `selected.exception` first or use
                 # a try-except block. You can also quickly check if the receiver was
@@ -393,7 +393,7 @@ async def select(  # noqa: DOC503
                     continue
                 print(f"timer1: now={datetime.datetime.now()} drift={selected.message}")
                 timer2.stop()
-            elif selected_from(selected, timer2):
+            elif timer2.triggered(selected):
                 # Explicitly handling of exceptions
                 match selected.exception:
                     case ReceiverStoppedError():