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> http://www.lua.org/manual/5.1/manual.html#2.5.5 With the description of manual.html#2.5.5 , the length of b should be 1 rather than 3. Because b[2]'s value is nil, so the array has "holes". ___________________________________________________________ 好玩贺卡等你发,邮箱贺卡全新上线! http://card.mail.cn.yahoo.com/