Luabind class demonstration

Consider this code that exposes a C++ class to Lua:

	#include <string>
	#include <iostream>
	#include <luabind/luabind.hpp>
	class testclass
	{
	public:
	testclass(const std::string& s): m_string(s) {}
	void print_string() { std::cout << m_string << "\n"; }
	private:
	std::string m_string;
	};
	extern "C" int init(lua_State* L)
	{
	using namespace luabind;
	open(L);
	module(L)
	[
	class_<testclass>("testclass")
	.def(constructor<const std::string&>())
	.def("print_string", &testclass::print_string)
	];
	return 0;
	}

view raw testclass.cpp hosted with ❤ by GitHub

When run:

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