Luabind: properties demonstration

Consider the following code:

	#include <string>
	#include <iostream>
	#include <luabind/luabind.hpp>
	struct A
	{
	A(int val): a(val), b(5) {}
	int a;
	int b;
	};
	extern "C" int init(lua_State* L)
	{
	using namespace luabind;
	open(L);
	module(L)
	[
	class_<A>("A")
	.def(constructor<int>())
	.def_readwrite("a", &A::a)
	.def_readonly("b", &A::b)
	];
	return 0;
	}

view raw properties.cpp hosted with ❤ by GitHub

When run:

kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/properties$ 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/properties$ ./commands.bash 
7
89
5
lua: property 'b' is read only
stack traceback:
[C]: in function '__newindex'
test.lua:7: in main chunk
[C]: in ?
kuyu@ub16:~/dkuyu/Dropbox/practice/lua/luabind/properties$