Added overloading example

Achimh3011 · Achimh3011 · commit 7b1cc7fbee5f · 2011-04-06T22:31:43.000+02:00
diff --git a/09-Overloading/overload.cpp b/09-Overloading/overload.cpp
@@ -0,0 +1,58 @@
+#include <sstream>
+#include <string>
+
+class Example {
+public:
+	Example() 
+	{}
+
+	void doit()
+	{ 
+		mS = "void"; 
+	}
+	std::string doit(unsigned int i)
+	{ 
+		std::stringstream s; 
+		s << i; 
+		mS = s.str(); 
+		return mS;
+	}
+	void doit(std::string s)
+	{ 
+		mS = s;
+	}
+
+	int makeIt(std::string s, int n=1, std::string t="")
+	{ 
+		std::stringstream u; 
+		for (unsigned int i=0; i<n; ++i) 
+			u << s; 
+		mS = u.str() + t; 
+		return n + ( t.size() > 0 ? 1 : 0 );
+	}
+	
+	std::string print() const
+	{ return mS; }	
+private:
+	std::string mS;
+};
+
+#include <boost/python.hpp>
+using namespace boost::python;
+
+BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS(makeIt_overloads, makeIt, 1, 3)
+
+BOOST_PYTHON_MODULE(overload)
+{
+	void        (Example::*d1)()             = &Example::doit;
+	std::string (Example::*d2)(unsigned int) = &Example::doit;
+	void        (Example::*d3)(std::string)  = &Example::doit;
+
+	class_<Example>("Example")
+		.def("__str__", &Example::print)
+		.def("doit", d1)
+		.def("doit", d2)
+		.def("doit", d3)
+		.def("makeIt", &Example::makeIt, makeIt_overloads())
+	;
+}	
diff --git a/09-Overloading/overload.py b/09-Overloading/overload.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+
+from overload import Example
+
+e = Example()
+
+e.doit(); print e
+print e.doit(2)
+e.doit("Hallo"); print e
+
+print "------"
+
+print e.makeIt("xxx"); print e
+print e.makeIt("abc", 2); print e
+print e.makeIt("xyz", 3, "abc"); print e
+
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -15,7 +15,7 @@ ADD_SUBDIRECTORY(05-Inheritance)
 ADD_SUBDIRECTORY(06-VirtualFunctionsInPython)
 ADD_SUBDIRECTORY(07-Operators)
 ADD_SUBDIRECTORY(08-CallPolicies)
-#ADD_SUBDIRECTORY(09-Overloading)
+ADD_SUBDIRECTORY(09-Overloading)
 #ADD_SUBDIRECTORY(10-ObjectInterface)
 #ADD_SUBDIRECTORY(11-ExtractingObjects)
 ADD_SUBDIRECTORY(12-Embedding)
