How to use D without the GC ?

[Vinod K Chandran]

On Wednesday, 12 June 2024 at 18:58:49 UTC, evilrat wrote:
> the only problem is that it seems to leak a lot PydObjects so i 
> have to manually free them, even scope doesn't helps with that 
> which is sad.
>

Oh I see. I did some experiments with nimpy and pybind11. Both 
experiments were resulted in slower than ctypes dll calling 
method. That's why I didn't take much interest in binding with 
Python C API. Even Cython is slower compare to ctypes. But it can 
be used when we call the dll in Cython and call the cython code 
from python. But then you will have to face some other obstacles. 
In my case, callback functions are the reason. When using a dll 
in cython, you need to pass a cython function as callback and 
inside that func, you need to convert everything into pyobject 
back and forth. That will take time. Imagine that you want to do 
some heavy lifting in a mouse move event ? No one will be happy 
with at snail's pace.
But yeah, Cython is a nice language and we can create an entire 
gui lib in Cython but the execution speed is 2.5X slower than my 
current c3 dll.