shorter.p6

my $channel = Channel.new;

react {
    for (^10).pick(*).map( -> $i { Promise.in($i + 0.5).then({ $i })}) -> $p {
        whenever $p -> $v {
            $channel.send: $v;
        }
    }
    CLOSE {
        $channel.close;
    }
}

say $channel.list;