demo.pl

say "Creating a couple of threads...";

my $t1 = Thread.start({ sleep 1; say "Thread 1 done"; });
my $t2 = Thread.start({ sleep 2; say "Thread 2 done"; });

say "Waiting for joins...";
.join for $t1, $t2;
say "Joined!";

say "---";

say "Creating two promises...";

my $a = async { sleep 2; say "omg slept 2"; 27 }
my $b = async { sleep 1; say "omg slept 1"; 15 }

say "Scheduler has $*SCHEDULER.outstanding() tasks";
say "Waiting for results...";
say $a.result + $b.result;

say "---";

my $start = now;
my @line_counters = dir('docs/announce').map({
    async {
        say "Reading $_";
        my $lines = $_.IO.lines.elems;
        say "Done $_";
        $lines
    }
});

say [+] @line_counters.map(*.result);
say now - $start;