init_alias equivalent in nanobind?

[zhqrbitee]

First, thanks for the great work on nanobind! I'm currently evaluating how to migrate from pybind11 to nanobind for my project and it seems promising.
However, in pybind11, we used init_alias to tell pybind11 to always initialize the trampoline class when creating a new instance: https://pybind11.readthedocs.io/en/stable/advanced/classes.html#extended-trampoline-class-functionality. After searching through nanobind's docs, I didn't find any equivalent of init_alias. So is it a missing feature in nanobind now, or simply I miss it in the docs?

[wjakob]

Nanobind always creates the alias class at the moment (it is as if init_alias was specified for all constructors). We may consider porting this optimization if it is found to be a performance issue.

[zhqrbitee]

Thanks for the answer!

[zhqrbitee]

@wjakob A follow up question, is there any plan to support the optimization from pybind11 (that don't create alias class if python class doesn't actually inherit)?

[wjakob]

@wjakob A follow up question, is there any plan to support the optimization from pybind11 (that don't create alias class if python class doesn't actually inherit)?

I added it in the meantime. The feature to optionally disable the optimization was not ported (yet).