On 24 Dec 2009, at 10:41, Bee Jay wrote: >> I think the regular way to do this in Object Pascal is via implements-style >> delegation (which doesn't really fake mixins; I think it provides exactly >> the same functionality, just using a slightly different concept). I don't >> think that's already fully functional in FPC, but Florian and Sergei >> (Gorelkin) have recently improved it quite a bit. > > Yes. I also think class helper feature may provide similar functionality.
No, class helpers add a certain method to a particular class. They don't declare a generic implementation that can be added to multiple other classes (except if these other classes inherit from the class the method was added to). > But AFAIK FPC doesn't yet support either feature. :( As I said, at least svn trunk already supports implements-style delegation to a certain extent (and even 2.4.0 partially supports it). And you can of course also use a regular delegation pattern, since mixins are basically a form of automated delegation (and once interface delegation fully works in the compiler, you can remove your manual wrappers). Jonas_______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
