my $c = Channel.new; Promise.in(1).then({$c.send(100500)}); say await $c; my $c2 = Channel.new; await (^5).map: { start { my $r = rand; sleep $r; $c2.send($r); } } $c2.close; say $c2.list; my $c3 = Channel.new; await Promise.allof( start { sleep 0.5; $c3.send('1'); }, start { sleep 0.1; $c3.send('2'); } ); $c3.close; say $c3.list.join: ', '; my @promises; for (3,1,5,2) -> $a { @promises.push(start { sleep $a; say $a; }) } await(|@promises); say "It took $(now - ENTER now) seconds to run";