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Added write only property functions for issue #1142 (#1144)

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py::class_<T>'s `def_property` and `def_property_static` can now take a
`nullptr` as the getter to allow a write-only property to be established
(mirroring Python's `property()` built-in when `None` is given for the
getter).

This also updates properties to use the new nullptr constructor internally.
This commit is contained in:
Ted Drain
2017-11-07 08:35:27 -08:00
committed by Jason Rhinelander
parent 71178922fd
commit 0a0758ce3a
5 changed files with 73 additions and 18 deletions
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8
tests/test_methods_and_attributes.cpp
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@@ -279,12 +279,20 @@ TEST_SUBMODULE(methods_and_attributes, m) {
.def(py::init<>())
.def_readonly("def_readonly", &TestProperties::value)
.def_readwrite("def_readwrite", &TestProperties::value)
.def_property("def_writeonly", nullptr,
[](TestProperties& s,int v) { s.value = v; } )
.def_property("def_property_writeonly", nullptr, &TestProperties::set)
.def_property_readonly("def_property_readonly", &TestProperties::get)
.def_property("def_property", &TestProperties::get, &TestProperties::set)
.def_property("def_property_impossible", nullptr, nullptr)
.def_readonly_static("def_readonly_static", &TestProperties::static_value)
.def_readwrite_static("def_readwrite_static", &TestProperties::static_value)
.def_property_static("def_writeonly_static", nullptr,
[](py::object, int v) { TestProperties::static_value = v; })
.def_property_readonly_static("def_property_readonly_static",
[](py::object) { return TestProperties::static_get(); })
.def_property_static("def_property_writeonly_static", nullptr,
[](py::object, int v) { return TestProperties::static_set(v); })
.def_property_static("def_property_static",
[](py::object) { return TestProperties::static_get(); },
[](py::object, int v) { TestProperties::static_set(v); })