pybind11::detail::cloudViewer_optional_caster< T > Struct Template Reference

#include <cloudViewer_pybind.h>

Inheritance diagram for pybind11::detail::cloudViewer_optional_caster< T >:

Public Types
using	value_conv = make_caster< typename T::value_type >

Public Member Functions
bool	load (handle src, bool convert)
	PYBIND11_TYPE_CASTER (T, _("Optional[")+value_conv::name+_("]"))

Static Public Member Functions
template<typename T_ >
static handle	cast (T_ &&src, return_value_policy policy, handle parent)

Detailed Description

template<typename T>
struct pybind11::detail::cloudViewer_optional_caster< T >

Custom pybind11 type caster for cloudViewer::utility::optional, which backports C++17's std::optional. We need compiler supporting C++14 or newer. Typically, this can be used to handle "None" parameters from Python.

Example python function:

def add(a, b=None):
    # Assuming a, b are int.
    if b is None:
        return a
    else:
        return a + b

Here's the equivalent C++ implementation:

m.def("add",
    [](int a, cloudViewer::utility::optional<int> b) {
        if (!b.has_value()) {
            return a;
        } else {
            return a + b.value();
        }
    },
    py::arg("a"), py::arg("b") = py::none()
);

Then this function can be called with:

add(1)
add(1, 2)
add(1, b=2)
add(1, b=None)

Definition at line 149 of file cloudViewer_pybind.h.

Member Typedef Documentation

value_conv

template<typename T >

using pybind11::detail::cloudViewer_optional_caster< T >::value_conv = make_caster<typename T::value_type>

Definition at line 150 of file cloudViewer_pybind.h.

Member Function Documentation

cast()

template<typename T >

template<typename T_ >

static handle pybind11::detail::cloudViewer_optional_caster< T >::cast ( T_ &&  src, return_value_policy  policy, handle  parent  )

inlinestatic

Definition at line 153 of file cloudViewer_pybind.h.

load()

template<typename T >

bool pybind11::detail::cloudViewer_optional_caster< T >::load ( handle  src, bool  convert  )

inline

Definition at line 161 of file cloudViewer_pybind.h.

References convert().

PYBIND11_TYPE_CASTER()

template<typename T >

pybind11::detail::cloudViewer_optional_caster< T >::PYBIND11_TYPE_CASTER	(	T	,
		_("Optional[")+value_conv::name+_("]")
	)

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The documentation for this struct was generated from the following file:

• /root/ACloudViewer/libs/Python/pybind/cloudViewer_pybind.h