3 redef fun to_s
do return "an instance of B"
13 var g
= new HashMap[Int,B
]
17 redef fun to_s
do return "{a} {b} {c} {d} {e} {h}\n" +
19 "{a isa Bool} {b isa Bool} {c isa Int} {d isa Float}\n" +
20 "{e isa String} {f isa B} {not f isa A} {g isa HashMap[Int,B]}"