//inline bool isNone () const { return m_ref == LUA_NOREF; }
inline bool isNil () const { return type () == LUA_TNIL; }
+ inline bool isBoolean () const { return type () == LUA_TBOOLEAN; }
inline bool isNumber () const { return type () == LUA_TNUMBER; }
inline bool isString () const { return type () == LUA_TSTRING; }
inline bool isTable () const { return type () == LUA_TTABLE; }