> On Jul 10, 2020, at 12:31 PM, Sven Barth <pascaldra...@googlemail.com> wrote: > > A lookup is only necessary if you use e.g. "SomeClass as SomeIntf".
so if I do: DoSomething(c as IFoo); then Supports() is called at runtime to return the IFoo interface? That's the kind of thing I was really curious about, when are runtime checks performed vs compile time checks. Regards, Ryan Joseph _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal