How to go from stl::map to dict

[brandonmpetty]

I am trying to pass in a Python dict, and have it convert to a C++ map.
This was happening automatically with Pybind11.

	typedef std::variant<int, double> ParameterValue;
	typedef std::map<std::string, ParameterValue> ParameterMap;

	void ToBinary(const nb::ndarray<Pixel8, nb::ndim<2>>& binaryImageArray, const ParameterMap& parameters={})

Everything compiles, but I get the following error when trying to pass in a dict from python:

    sauvola.to_binary(binary_image, {"window": 75, "k": 0.2})
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: to_binary(): incompatible function arguments. The following argument types are supported:
    1. to_binary(self, binaryImageArray: ndarray[dtype=uint8, shape=(*, *)], parameters: collections.abc.Mapping[str, std::variant<int,double>] = {}) -> None

Invoked with types: doxapy.Binarization, ndarray, dict

Is there anything I can do to get this working as seamlessly as possible?

[wjakob]

You forgot to include the type caster header for variants.