Am 13.07.2013 18:49, schrieb bearophile:
Benjamin Thaut:
Yes the assignment in this(DefaultCtor) is needed, because the
construction process of a D object is defined as:
OK.
The debugging values are needed because most debuggers won't be able
to evaluate properties while debugging.
OK.
Is that ClassCompose destructor enough (with something added for the
debug build)?
~this() {
if (!isDestructed) {
_instance.destroy;
isDestructed = true;
}
}
Thats enough for the debug build.
Trying to use ClassCompose in my code I have had some problems caused by
const classes and ClassCompose dtor. Maybe such dtor (and isDestructed)
can be versioned out for composed-in classes that only contain values...
Can you give an example for that?
Yes this looks pretty similar to scoped in phobos but I always thought
that scoped was inteded for objects to be placed on the stack instead
of inside other objects.
Right. I think Scoped can't be used for class composition.
But isn't such ClassCompose enough for both purposes? Or is it better to
have in Phobos both Scoped and something similar to ClassCompose?
Thats also why scoped does some additional alignment which is
garantueed when you do it within a class.
Maybe such alignment can be added to the ClassCompose too.
But that would be a uneccessary overhead. Just adding a align(4) or
align(16) like suggested below would be sufficient.
Kind Regards
Benjamin Thaut
