On 15/11/2011, Martin Schreiber <mse00000@g.....> wrote:
>
Thanks Martin. Extending my example by changing the body of foo() too...
AClass.Free;
AClass := TStringList.Create;
AClass.Add('inside foo');
...reveals a bit more about the differences.
>> procedure foo(const AClass: TStringList);
>>
> Take a copy of the AClass instance pointer, AClass is readonly.
This one confused me a bit. I thought the whole object would be
read-only, but in fact it is just the AClass instance pointer which
cannot be modified. The properties of AClass are still read-write.
--
Regards,
- Graeme -
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