foo#=bar[0];

foo##bar[0] = 3;

foo##bar[0]##baz[1] = 3;

foo##bar[0]##baz[1];

foo##bar#=bar[0];

foo##bar##baz #= bar##baz[0];

foo[bar + 1];

foo.[bar + 1];

foo.{bar + 1};

foo.[bar + 1] = 1;

foo.{bar + 1} = 1;

foo[bar + 1] = 1;