I:\>perl -MO=Deparse
my $x = sub { print "Params: @_\n" };
$x->(10,20,30);
&{ $x }(30,40,50);
^D
my $x = sub {
    print "Params: @_\n";
};
&$x(10, 20, 30);
&{$x;}(30, 40, 50);
- syntax OK