$ls: ((foo,));

foo {
  baz: length($ls);
  baz: type-of($ls);
  baz: inspect($ls);
}

bar {
  baz: length(&);
  baz: type-of(&);
  baz: inspect(&);
}

foo {
  string: inspect(&);
  str-length: str-length(inspect(&));
  list-length: length(&);
}

foo, bar {
  string: inspect(&);
  str-length: str-length(inspect(&));
  list-length: length(&);
}