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Improve consistency of array and array_t with regard to other pytypes

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* `array_t(const object &)` now throws on error
* `array_t::ensure()` is intended for casters —- old constructor is
  deprecated
* `array` and `array_t` get default constructors (empty array)
* `array` gets a converting constructor
* `py::isinstance<array_T<T>>()` checks the type (but not flags)

There is only one special thing which must remain: `array_t` gets
its own `type_caster` specialization which uses `ensure` instead
of a simple check.
This commit is contained in:
Dean Moldovan
2016-11-16 01:35:22 +01:00
committed by Wenzel Jakob
parent c7ac16bb2e
commit 4de271027d
4 changed files with 101 additions and 19 deletions
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24
tests/test_numpy_array.cpp
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@@ -126,4 +126,28 @@ test_initializer numpy_array([](py::module &m) {
);
sm.def("function_taking_uint64", [](uint64_t) { });
sm.def("isinstance_untyped", [](py::object yes, py::object no) {
return py::isinstance<py::array>(yes) && !py::isinstance<py::array>(no);
});
sm.def("isinstance_typed", [](py::object o) {
return py::isinstance<py::array_t<double>>(o) && !py::isinstance<py::array_t<int>>(o);
});
sm.def("default_constructors", []() {
return py::dict(
"array"_a=py::array(),
"array_t<int32>"_a=py::array_t<std::int32_t>(),
"array_t<double>"_a=py::array_t<double>()
);
});
sm.def("converting_constructors", [](py::object o) {
return py::dict(
"array"_a=py::array(o),
"array_t<int32>"_a=py::array_t<std::int32_t>(o),
"array_t<double>"_a=py::array_t<double>(o)
);
});
});