use strict;
    sub foo {
        print "foo: @_\n";
    }
    my $bar = "foo";
    &foo;      # works
    # &{$bar}; # ack! symref as a call doesn't work

    my $sref = \&{$bar};  # works!
    $sref->(1,2,3);       # foo: 1 2 3