Michael Van Canneyt wrote:
On Sun, 5 Jan 2014, Mark Morgan Lloyd wrote:
Simulating a C-style conditional, I can do this
function tf(const q: qword; const qt, qf: TObject): TObject; inline;
begin
Assert(TypeOf(qt) = TypeOf(result));
This is always true. Everything descends from TOBject.
But assuming the result is not TObject, it would be
Assert((qt=Nil) or (qt.Inheritsfrom(TheResultClass))
So again skipping the nil check for simplicity, this compiles but are
the semantics right?
Assert(qt.ClassType.InheritsFrom(result.ClassType));
Although that is still radically different from what the C style macro
does.
Yes, understood and being watched out for.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
_______________________________________________
fpc-pascal maillist - fpc-pascal@lists.freepascal.org
http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
