p6.p6

    my $c = Channel.new;

    # Start five Promises that sleep for 1..5 seconds, and then
    # send a value to our Channel
    (1..5).map: -> $v {
        start {
            sleep $v;
            $c.send: "$v from thread {$*THREAD.id}";
            $c.close if $v == 5;
            CATCH { default { warn $_; warn .backtrace } }
        }
    }

    # Continuously loop and poll the channel, until it's closed
    loop {
        if $c.poll -> $item {
            say "$item received after {now - INIT now} seconds";
        }
        elsif $c.closed {
            last;
        }
    }