[fpc-devel] Object upgrades

J. Gareth Moreton gareth at moreton-family.com
Sat Jun 15 17:35:23 CEST 2019


Ryan Joseph requested that I reply to this to show that it's in the 
mailing list.  Hopefully the technical problems can be resolved!

Gareth aka. Kit


On 15/06/2019 15:25, Ryan Joseph wrote:
>
>> On Jun 12, 2019, at 9:39 AM, Ryan Joseph <genericptr at gmail.com> wrote:
>>
>> { resending this, I think it got lost during the server move since I’m not seeing it in the archives }
> { I think the server is back up so I’m resending this for the 3rd time to see if it gets through. }
>
> Another question. I’m not sure it’s possible but I did try to add management operators to objects and found that if a initialize operator was declared in a unit which was precompiled and then inherited from an object in another unit which declared another initialize operators, the initialize operator would be called twice.
>
> The issue is that the operator is compiled into some other code which always gets called when the object is used as a var type. Is there any work around to that? The options I’m aware of are:
>
> 1) don’t allow management operators in objects (that would be very unfortunate indeed).
> 2) don’t allow subclasses to redeclare a management operator (that seems ok since the operator can call a virtual method from the base class).
> 3) allow overriding of operators. I don’t think that would be make sense or perhaps even possible.
>
> Regards,
> 	Ryan Joseph
>
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>

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