On Sun, 23 Jan 2011, leledumbo wrote:
Why ?
tiOPF uses the visitor pattern extensively, and it is implemented as a
class.
Well... because there's only a bunch of visit method which is abstract?
What's wrong with using an abstract class ? By choosing an interface,
you implicitly get the reference counting on top of things, and
this seems to be what causes your error ? (at least, your error
is a typical symptom for such cases).
It doesn't compile for me. What version of FPC did you use ?
Whoops! Sorry, I should've said that I use FPC 2.5.1 r16638 (or whatever
revision where TFPGObjectList in fgl.pp has enumerator to be used by for-in
loop)
I'll need to update my compiler first, then.
Michael.
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