g_Data={} A = {     id = 0,     nNum = 0, } -- construct a function A:New(o)  o = o or {};     o.id = o.id  or 0;     o.nNum =  o.nNum or 0;     setmetatable(o, self);  self.__index = self;     if o.i

来自MSDN-2001-OCT: Visual Tools and Languages/Visual Studio 6.0 Documentation/Visual Basic Documentation/Using Visual Basic/Programmer’s Guide/Part 2: What Can You Do With Visual Basic/Programming with