On Monday, 6 November 2023 at 05:30:02 UTC, zoe wrote:
I customized object.d in -betterc mode and created NEW
templates, with modules I can seemingly create classes without
extern(C++) mode, and type conversions in function calls seem
to work fine. But when destroy doesn't find a way to call the
__xtdor() method of the corresponding subclass, is there any
way to execute __xtdor() correctly
Unfortunately, D classes cannot have virtual destructors, so
TypeInfo is the only way to find the correct derived class
destructor to call at runtime.
I think the best you can do is implement your own virtual
destructors, and your own `destroy` function that knows how to
call them; for example:
```d
interface BettercDestructible
{
void destruct() nothrow @nogc;
}
class MyClass : BettercDestructible
{
// ...
override void destruct()
{
// destructor implementation here
}
~this() { this.destruct(); }
}
void destroy(BettercDestructible obj)
{
obj.destruct();
}
```
Of course, for classes that don't implement
`BettercDestructible`, you're still out of luck, but it's better
than nothing.
