Confusion around types

[francescodaghero]

Hi,
I'm attempting to generate bindings for the first time, but I'm unsure about the capabilities of this library.
I've gone through the documentation, but I haven't been able to resolve my issue or determine whether what I'm trying to achieve is even feasible.
In my C++ library, I have the following:

using CU64= uint64_t;

// Just an example function
CU64 my_reverse_bit(CU64 arg) {...};

My idea was to expose in my Python package a type and the function in the following way:

import mypackage
x = mypackage.CU64(0x2)
y = mypackage.my_reverse_bit(x) 

So, in Python CU64 is a class, while in the C++ side, it stays an alias.

However, currently, I get either some compilation errors or some std::bad_cast errors at runtime. Could you provide me a pointer if this is feasible or if I should create a class CU64?

[wjakob]

Elementary arithmetic types can't be bound in Python. You could probably achieve something like this by representing CU64 as a C++ class with implicit conversions, which makes it effectively equivalent to an uint64_t.