Luabind tostring 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) {}
	friend std::ostream& operator<<(std::ostream& os, testclass const& tc);
	private:
	int m_int;
	};
	std::ostream& operator<<(std::ostream& os, testclass const& tc)
	{
	os << tc.m_int;
	return os;
	}
	extern "C" int init(lua_State* L)
	{
	using namespace luabind;
	open(L);
	module(L)
	[
	class_<testclass>("testclass")
	.def(constructor<int>())
	.def(tostring(self))
	];
	return 0;
	}

view raw tostring.cpp hosted with ❤ by GitHub

When run:

kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/tostring$ cat test.lua
package.loadlib('./testclass.so', 'init')()
a = testclass(101)
print(tostring(a))
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/tostring$ 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/tostring$ ./commands.bash
101
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/tostring$