> On Mar 8, 2018, at 2:20 PM, Maciej Izak <[email protected]> wrote:
>
> Management operators are almost unusable without default field/default
> property. How it works you can see here :
>
> https://github.com/maciej-izak/PascalSmartPointers
>
> the examples can be tested with NewPascal for now. The simplified inheritance
> for records can be simulated by "default field", but the main idea is to use
> mix of generics/management operators and default field. "default field" has
> very long list of potential usages.
I see, you’re using a generic record to wrap another type. That’s an
interesting solution but I wonder if the heavy use of generics will be
cumbersome in practical implementations. I need to try it I guess. :) Thanks.
> "ARC" objects are for sure possible to achieve but in other way (by new
> feature called concepts). Management operators are intended as base for
> nullable types, smart pointers and can be used for ARC classes too but the
> real and proper ARC classes should be implemented in other way. In this are
> is a lot of R&D - you need to remember that the priority is to keep backward
> compatibility - we don't want Delphi NEXTGEN for all modes - the main
> advantage of FPC is freedom of choice :)
In many cases I don’t actually need anything on the heap and a record could be
used instead but because of limitations on records in Pascal I need a full
class. Doing the ARC route is just solving a problem I created by the fact I
used a class instead of a record in the first place. c++ solves this by letting
you keep the class on the stack or the heap depending on how you want it’s
memory managed. That was a superior choice in my opinion but I understand
implementing that in Pascal would be a massive overhaul and probably not worth
it.
Regards,
Ryan Joseph
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