Re: [fpc-pascal] Re: Problem with virtual constructors
2011/6/1 leledumbo leledumbo_c...@yahoo.co.id: Yep, this situation would confuse the compiler as it's possible to assign descendant class instance to a class. 1st solution: rename one of the constructor, don't need to use virtual/override Its a class factory, i cannot have multiple constructors, so i need virtual constructors in order to build classes from names. 2nd solution: try using constref instead of const (I hope constref has the same semantics as var for classes, where the assigned object must be exactly the instance of expected class, descendants not allowed) I will try that. -- View this message in context: http://free-pascal-general.1045716.n5.nabble.com/Problem-with-virtual-constructors-tp4445729p4445832.html Sent from the Free Pascal - General mailing list archive at Nabble.com. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Re: Problem with virtual constructors
Cobines solution worked ! not tested constref. 2011/6/1 Jorge Aldo G. de F. Junior jagf...@gmail.com: 2011/6/1 leledumbo leledumbo_c...@yahoo.co.id: Yep, this situation would confuse the compiler as it's possible to assign descendant class instance to a class. 1st solution: rename one of the constructor, don't need to use virtual/override Its a class factory, i cannot have multiple constructors, so i need virtual constructors in order to build classes from names. 2nd solution: try using constref instead of const (I hope constref has the same semantics as var for classes, where the assigned object must be exactly the instance of expected class, descendants not allowed) I will try that. -- View this message in context: http://free-pascal-general.1045716.n5.nabble.com/Problem-with-virtual-constructors-tp4445729p4445832.html Sent from the Free Pascal - General mailing list archive at Nabble.com. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
