Spec Supply.unchanged

Author: lizmat

S17-concurrency.pod

@@ -645,6 +645,14 @@ a C<Supply> of coordinates into a C<Supply> of begin/end points.
 Produces a C<Supply> that passes on the values of the given Supply with the
 given delay (in seconds).
 
+=item unchanged
+
+  my $u = $s.unchanged( $seconds, :$scheduler );
+
+Produces a C<Supply> that only passes on a value if it wasn't superseded by
+another value in the given time (in seconds).  Optionally uses another
+scheduler than the default scheduler, using the C<scheduler> named parameter.
+
 =back
 
 There are some others that will only publish a result or results if C<done> is