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added an example on using fancier kinds of default arguments

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This commit is contained in:
Wenzel Jakob 2016-01-17 22:36:43 +01:00
parent 1ae77fe4d3
commit 9180519d8c
3 changed files with 28 additions and 2 deletions
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15
example/example11.cpp
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@ -8,11 +8,26 @@
*/
#include "example.h"
#include <pybind11/stl.h>
void kw_func(int x, int y) { std::cout << "kw_func(x=" << x << ", y=" << y << ")" << std::endl; }
void kw_func4(const std::vector<int> &entries) {
std::cout << "kw_func4: ";
for (int i : entries)
std::cout << i << " ";
std::cout << endl;
}
void init_ex11(py::module &m) {
m.def("kw_func", &kw_func, py::arg("x"), py::arg("y"));
m.def("kw_func2", &kw_func, py::arg("x") = 100, py::arg("y") = 200);
m.def("kw_func3", [](const char *) { }, py::arg("data") = std::string("Hello world!"));
/* A fancier default argument */
std::vector<int> list;
list.push_back(13);
list.push_back(17);
m.def("kw_func4", &kw_func4, py::arg("myList") = list);
}

6
example/example11.py
View File

@ -5,11 +5,12 @@ import pydoc
sys.path.append('.')
from example import kw_func, kw_func2, kw_func3
from example import kw_func, kw_func2, kw_func3, kw_func4
print(pydoc.render_doc(kw_func, "Help on %s"))
print(pydoc.render_doc(kw_func2, "Help on %s"))
print(pydoc.render_doc(kw_func3, "Help on %s"))
print(pydoc.render_doc(kw_func4, "Help on %s"))
kw_func(5, 10)
kw_func(5, y=10)
@ -29,3 +30,6 @@ try:
kw_func2(x=5, y=10, z=12)
except Exception as e:
print("Caught expected exception: " + str(e))
kw_func4()
kw_func4(myList = [1, 2, 3])

9
example/example11.ref
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@ -11,7 +11,12 @@ kkww__ffuunncc22(...)
Help on built-in function kw_func3
kkww__ffuunncc33(...)
Signature : (data : str = u'Hello world!') -> NoneType
Signature : (data : unicode = u'Hello world!') -> NoneType
Help on built-in function kw_func4
kkww__ffuunncc44(...)
Signature : (myList : list<int> = [13L, 17L]) -> NoneType
kw_func(x=5, y=10)
kw_func(x=5, y=10)
@ -25,3 +30,5 @@ kw_func(x=5, y=10)
Caught expected exception: Incompatible function arguments. The following argument types are supported:
1. (x : int = 100L, y : int = 200L) -> NoneType
kw_func4: 13 17
kw_func4: 1 2 3