Luabind operator demonstration

Consider the following code:

	#include <string>
	#include <iostream>
	#include <luabind/luabind.hpp>
	#include <luabind/operator.hpp>
	class testclass
	{
	public:
	testclass(int val) : m_int(val) {}
	void print()
	{
	std::cout << m_int << std::endl;
	}
	testclass operator+(int rhs)
	{
	testclass tmp(m_int + rhs);
	return tmp;
	}
	private:
	int m_int;
	};
	extern "C" int init(lua_State* L)
	{
	using namespace luabind;
	open(L);
	module(L)
	[
	class_<testclass>("testclass")
	.def(constructor<int>())
	.def("print", &testclass::print)
	.def(self + int())
	];
	return 0;
	}

view raw operator.cpp hosted with ❤ by GitHub

When run:

kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/operator$ cat test.lua
package.loadlib('./testclass.so', 'init')()
a = testclass(5)
a:print()
c = a + 6
c:print()
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/operator$ cat commands.bash 
#!/bin/bash
g++ testclass.cpp -I/usr/include/lua5.2/ -c -fPIC
g++ -shared -Wl,--whole-archive -o testclass.so testclass.o -lluabind -Wl,--no-whole-archive
lua test.lua
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/operator$ ./commands.bash 
5
11
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/operator$