Jonas Maebe wrote:
On 09 Feb 2011, at 13:41, Mark Morgan Lloyd wrote:
I'm doing something wrong- it works.
I've got a sequence of classes, each with a Parent class procedure and
Children() class function which reference a global array associated
with each class (hardcoded name). Each class also has an Oid()
function which appends a hardcoded number to whatever it's inherited.
A "class reference", which is the official name of a "class of xxx"
type, is basically a fancy monicker for the VMT of a class. So it's
normal that calling virtual class methods via class references works as
you'd expect.
It was the "class of" bit that I was initially missing- and I think I
used the term "reference" in my initial question because I was gradually
getting my head around the various issues.
In actual fact I was looking at the Forward type declarations section in
the Reference guide yesterday and trying to work out exactly what "only
possible with pointer types and classes" meant- pointers are adequately
covered but I wonder whether an example of the latter form would be
appropriate, even though it precedes the chapter on classes?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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