Getters/setters generator
Nemanja Boric via Digitalmars-d-announce
digitalmars-d-announce at puremagic.com
Wed Jan 18 07:43:39 PST 2017
On Wednesday, 18 January 2017 at 15:29:43 UTC, Mark wrote:
> On Tuesday, 17 January 2017 at 15:59:26 UTC, Andrei
> Alexandrescu wrote:
>> On 1/17/17 12:08 PM, Mark wrote:
>>> On Tuesday, 17 January 2017 at 09:17:56 UTC, Andrei
>>> Alexandrescu wrote:
>>>> [...]
>>>
>>> Given that D supports class invariants, is there a real need
>>> for
>>> predicated setters?
>>
>> The invariant is evaluated after the setter has taken place,
>> i.e. after the object has been corrupted. The setter guard
>> prevents corruption from happening. -- Andrei
>
> I see. Is there a way to call invariant() of a class/struct
> directly? That would obviate the need for a particular
> predicate (copy the class state, run the setter, check if
> invariants are satisfied and restore previous state if they
> aren't).
You can call invariant directly with `assert(this);` IIRC.
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