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| 1 | [<AbstractClass>] | |
| 2 | type A () = | |
| 3 | member x.Guid with get, set | |
| 4 | member x.ExternalId with get, set | |
| 5 | ||
| 6 | override x.Equals(yobj) = | |
| 7 | match yobj with | |
| 8 | | :? A as y -> | |
| 9 | if (x.Guid = Guid.Empty || y.Guid = Guid.Empty) then | |
| 10 | // Lets look for ExternalId | |
| 11 | x.ExternalId = y.ExternalId | |
| 12 | else | |
| 13 | x.Guid = y.Guid | |
| 14 | | _ -> false | |
| 15 | ||
| 16 | type B () = | |
| 17 | inherit A () | |
| 18 | ||
| 19 | override x.Equals(yobj) = | |
| 20 | match yobj with | |
| 21 | | :? B as y -> | |
| 22 | if (x.Guid = Guid.Empty || y.Guid = Guid.Empty) then | |
| 23 | // Lets look for ExternalId | |
| 24 | x.ExternalId = y.ExternalId | |
| 25 | else | |
| 26 | x.Guid = y.Guid | |
| 27 | | _ -> false | |
| 28 | ||
| 29 | type C () = | |
| 30 | inherit A () | |
| 31 | ||
| 32 | override x.Equals(yobj) = | |
| 33 | match yobj with | |
| 34 | | :? C as y -> | |
| 35 | if (x.Guid = Guid.Empty || y.Guid = Guid.Empty) then | |
| 36 | // Lets look for ExternalId | |
| 37 | x.ExternalId = y.ExternalId | |
| 38 | else | |
| 39 | x.Guid = y.Guid | |
| 40 | | _ -> false |
