| 1 | open Ocollection |
| 2 | open Oset |
| 3 | |
| 4 | |
| 5 | class ['a] osetpt xs = |
| 6 | object(o) |
| 7 | inherit [int] oset |
| 8 | |
| 9 | val data = SetPt.empty |
| 10 | method tosetpt = data |
| 11 | (* if put [] then no segfault, if [11] then segfault *) |
| 12 | method toset = Obj.magic data |
| 13 | |
| 14 | method empty = {< data = SetPt.empty >} |
| 15 | method add e = {< data = SetPt.add e data >} |
| 16 | method iter f = SetPt.iter f data |
| 17 | method view = |
| 18 | if SetPt.is_empty data |
| 19 | then Empty |
| 20 | else let el = SetPt.choose data in Cons (el, o#del el) |
| 21 | |
| 22 | method del e = {< data = SetPt.remove e data >} |
| 23 | method mem e = SetPt.mem e data |
| 24 | method null = SetPt.is_empty data |
| 25 | |
| 26 | method tolist = SetPt.elements data |
| 27 | method length = SetPt.cardinal data |
| 28 | |
| 29 | method union s = {< data = SetPt.union data s#tosetpt >} |
| 30 | method inter s = {< data = SetPt.inter data s#tosetpt >} |
| 31 | method minus s = {< data = SetPt.diff data s#tosetpt >} |
| 32 | |
| 33 | end |